Both rivers have late runs of salmon and, in addition to stocks of coloured fish, there's a good chance of connecting with powerful, tide-fresh backenders, known as greybacks.
But on the Upper reaches, fishing is much more reasonable at various prices from PS20 to PS100 a day, and you will have every chance of landing a backender.
We could have the best pilots, the best backenders
, the best guardian angels or pararescuemen ...
The 58-year-old, of Battle Hill, who has just been presented with a long service award by bus operator Stagecoach, still remembers the days of trolleybuses and backenders during the 60s.
The dad-of-two said: "I started in 1966 and was a conductor on the trolley buses and open-back buses, known as backenders.
It wasn't long before the backenders told us radar coverage wasn't optimal from that location.
The backenders relayed the urgent request to stay airborne forward.
A lovely frosty morning is prime time to catch backenders
, particularly the male fish.
always should listen up to the pilot's radio during the approach phase to help sort out the picture and provide backup.
They are true late-running backenders
- sometimes called greybacks - and they can weigh into the teens of pounds and more.
Some anglers might mistake them for early running springers, but in actual fact they are late spawning backenders
There's no great evidence of a huge run of late backenders
coming in at the moment either, as it has done in previous years.
are big and powerful and, even though many of them will be coloured, and as such destined to be carefully returned to fight again, they can given an angler a terrific scrap.
There have always been late-running back end salmon and they should be left in peace, along with the earlier running backenders
to get on with the business of spawning.
One spring salmon is worth half a dozen backenders
in every respect.