The one thing with float tubes in Scotland is that although you might blow them up in nice sunny conditions as soon as you enter the cold water the air pressure in the bladders decreases. It's basic laws of physics and you cannae change that.
It happened to me on Beanie this year in a wind that made coming ashore to blow them back up difficult to say the least.
I mulled over the whole problem and on a recent rip to that fine purveyor of all things DIY, B&Q, I came away with a light bulb.
B&Q sell clear plastic tubing that is the same diameter as the Shakey life jacket style inflation valves, 15mm OD and 13mm ID. If you find something to flare the end of the tubing and then apply a hot hair dryer so the plastic softens, shove the wedge in a bit further, heat more and then run under a cold tap to set the plastic, you get a great fit over the tube valve. I used part of a Neutrik 1/4" audio jack and I have spares if anyone wants one.
So what you end up with is this,
And if you leave them fitted to all the valves you get this
The rear bladder routes like this
I might over the winter see if I can route the rear one internally but right now it works just fine. So how did it perform?
Yesterday on Park, true to form, the bladders went soft about five minutes into the first session so two or three blows into each pipe and the Red Oktober was back to her excellent buoyant self. I made sure that I kept her out of the sun during lunch in case she heated up too much.
All the pipes tuck out of the way in the pockets whilst afloat so as not to snag fly lines. I reconnect the pipes after squeezing all the air out so that they retain the correct diameter and maintain a snug seal.
The other issue I have had with the Oktober is that breathable waders slip on the seat. I acquired some of that rubber matting that goes under rugs on laminate floors and velcroed that to the seat.
Now I don't slip around at all and it seems to stay stuck OK too. If the Velcro comes unstuck I'll find a better method fixing it down because the end result is pretty cool.
The best tube made better