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Salmon Fishing Sink Tips

By 3rd January 2023

Salmon fishing these days has become an exacting science of grains & grams and specific cut lengths of exacting tungsten impregnated PVC or polyurethane sinking tips. This often makes me wonder how on earth we used to catch salmon at all in the old days!

The Old Double Taper Salmon Fly Lines

There are many who will automatically jump in and say there were more salmon around back then and it didn't matter as much but I remember plenty of blank days on the Tay through the 70's & 80's too or maybe I was just imagining it! When I started salmon fly fishing the popular line was a white Hardy double taper which had a 10 ft sink tip extruded into its front ends. When I say 'front ends' I mean 'front ends' as when the end you were using got tired after a few seasons all you simply had to do was reverse the line for a new one. No wonder the tackle manufacturer's phased out the old double tapers!

Fishing A Deep Salmon Fly

On the deeper salmon pools on the Scottish rivers it often pays when the water warms and salmon are naturally lying deep in the cooler thermals to get down onto the fish but unless you can truly see the bottom of a salmon pool it's a guess as to how close you are to the riverbed unless you feel your sink tip or fly clipping the riverbed through the swing. The only way to properly assess this is to get into the river as I have done and take a look yourself with a snorkel & mask! If you do you'll be surprised as to how much higher these long sink tips are actually fishing your fly as opposed to where you thought they were performing in the water column. 

Where Is Your Salmon Fly Fishing

Relax about the above as the whole 'T' or 'Type' identification system where the number following the T represents the sink rate of the tip in 'inches per second' is only calculated when an inch of tip material is dropped into a glass of still water. This sink rate 'Type' system does not take into account the buoyancy of a floating belly fly line that is so commonly used these days with most sink tips or the draw of the river flow which cancels out the majority of any tip's sink rate ability. Even when a big mend is applied after the forward delivery (allowing the tip to get a few free fall seconds to do its job) the tip will tend to start 'riding up' on an upward plane through the middle section of the swing due this floating main line buoyancy and the draw of the river.

Know The Exact Salmon Pool Depth 

How does all this science affect our salmon fishing line depth selection you may ask. Well it doesn't as much as you may think unless you 'intimately' know the riverbed & depth of each pool you are fishing and salmon are lying deep on the riverbed and are in 'snap happy' mode when your only chance of a 'take' is to put the fly right on their noses. Thankfully salmon will often come several feet or more for a fly and when I think back to my early days on the Tay my late ghillie mentor Willie Laird would often remark "if the salmon wants your fly son it'll let you know!" If your fly's flight path depth is half way there and there's a 'taker' in the pool you're making it much easier for that fish to intercept your fly. The shorter the distance the salmon has to travel obviously reduces the chances of that fish changing its mind after it starts its fly investigation process!

A Braided Core Sink Tip Or Polyleader

Although some shallower Scottish rivers like the Spey require a full floating line for many of its beautiful salmon pools the much deeper Tay is the opposite of that. The other thing that often influences the sink tip choice for anglers is their personal ability & their fly lines ability to turn over a heavy sink tip. On the bigger deeper Scottish salmon rivers fishing a proper sink tip is often the only way to go and that doesn't necessarily mean a lightly dipped thin profiled polyleader which I'd personally only consider for the front end of a proper braided core sink tip when delicate small fly presentation was required and usually only during low Summer water conditions.

My Own Thoughts On Salmon Fishing Sink Tip Use

Personally I don't like fishing full sunk lines even though I once designed one that didn't need a role cast to lift it and that came with an intermediate belly and 5 x 15ft sink tip choices that would hold good 'sub surface' shape profile all the way to the salmon fly business end while swinging through the pool. I think there's a few specific purposes for a full sunk line at certain times of the salmon fishing season and I don't mean in the freezing cold water of early Spring when salmon are 'naturally' holding higher in the water column where warmer water thermals are closer to that of the temperature of the North Sea where they've come from. The full sunk line from what I've personally seen works best on the deeper Scottish rivers in the warmer water of late Spring, Summer & Autumn when salmon are lying down deep on the riverbed and have 'seen it all' and you need to make it very easy for them to have a go! From a grace, elegance and personal fly fishing enjoyment point of view I like catching salmon on my full floating belly line with a 15ft tip and on the Tay I'm usually always on the Type 3 tip which is probably very close in sink density to the front end of my old Hardy double taper!

Develop Sub Surface Salmon Fishing Skill

If you're one of the semi skilled salmon fishers who are plentiful in this glorious pursuit and your thoughts are not 100% sub surface then you'll certainly pick up the 'takers' from time to time. Don't however let your ego run away with itself on how able a fly fisher you are just because you've technically spaced your fly correctly down through the pool. Without serious added fly depth consideration & experimentation when the going gets tough you're only 50% effective whether you care to admit it or not. Having served professionally on the Scottish rivers for many years I was fortunate to have been completely 'schooled' on a few highly memorable occasions by that very rare breed of fly fisher who'd show up on the beat maybe once or twice a year. Until you've seen these guys in operation (and they're appearance ratio is about 1 in 200 fishers) then you'll likely not even be aware of the extra dimension of salmon fishing tactical brilliance that does exist. Scratching your head wondering how on earth he's managed to hook that salmon the average fisher would only ever be able to put down to sheer luck!