I'm just in the process of building a pair of fibreglassed balsa floats (with aircraft ply in a few places for strength) for my LT-40. I'll post pix when they're done but one thing that I must say is that building your own is always better than buying pre-fab IMHO. A pair of floats is a great way to explore the intricacies of design and layout. I've built a bunch of kit planes, but these floats are the first time I've tried my hand at CAD and design and I've learned a whole lot from the experience.