You've brought an image back into my mind of an Argentinian guide hopping on one leg to help me with something or other because his SIMMS waders had a leak in one leg. And me in my £60 travel waders laughing at him.
Mind you, the boot was on the other foot - so to speak - when he led me across...
Luckily Ohanzee has lost the pictures of the hundredweight trout he caught to prove that method works. I could never trust it; I need a mechanical joint. Also, beware, not all - or even most - superglues are waterproof and all crack with constant flexing and stretching.
Probably buzzers. Nobody seems to fish buzzers in rivers - or at least they don't call them that, they call them nymphs and stick a bead on them. But chironomids are in ever river as well as every still water. A just subsurface buzzer might crack it.