I don't think Mo's quite convinced. He can be a little dense ya know. Maybe you should send me say a half dozen of those little fly ties. I'll get them wet a few times and try to convince him that they do indeed float. I can't promise that I won't need another half dozen to get the job done, but I'll try.
That's a very nice tie, good work. I'll bet it's a killer in hopper colors too. 
Haha well I'd better just send with a dozen and a half to make sure
I'm hoping to try it out in hopper colors when I get the foam I ordered a few days ago. I ended up getting 6 different colors I think, black, white, green, yellow, blue, and red. I'll be able to make some pretty interesting hoppers, crickets, and beetles with those colors haha.
For anyone who wants 2mm foam for fly tying, definitely go with craft foam (I got mine from amazon for $6 free shipping) instead of getting the name brand foam. Each sheet of foam I'm getting is 8.5"x11" or so and two sheets of each color.