Re: Pre-applying floatant
I've done both the things that Frank mentioned, "Hydrostop" from Loon Outdoors is very good.
Also have some "Water Shed" sitting on the bench to try, been sitting there about 3 yrs, I suppose I ought to try it eh.
Another thing I was taught years ago by my Mentor was to give all your dry flies a dusting of silicone or Scotch guard when you get all done tying them up.
*Comments posted above are only my opinion. I may be right....eh, I'm probably wrong. Take 'em for what they're worth.*