I feel your pain - The evening spinner fall, which commences at about dusk is murder on these old eyes. I can barely see my fly drifting down the riffle (one would say "just lift the rod tip when you see a rise" but there is such a feeding frenzy that I couldn't begin to say which one had taken my fly) and it is such an exciting time that I always pop one off on the hook-set . . . then I can't see to tie one back on. I use magnifyers on my hat brim and a light too but I'm shaking so badly it is usually hopeless. Oh, did I mention I will have already released a few two and three pounders? Can we experience deep satisfaction and sheer frustration at the same time?? I think so