I used to tie most of my flies with red thread and never gave it much thought (both trout and smallies) but last year went to using a chestnut color that was visually appealing to me. However my big fish success rate was down this past year and it got me wondering why.
A non fly fishing friend says he uses red hooks on his flukes and such and was outfishing his boat partner until his partner went to red hooks also.
This winter I went back to red thread and am tying everything with red...even though what is easily seen is only at the eye of the hook. Still it may look like a gill flash and may spark an attack.
Any thoughts on the theory?