I use the fly floatent that comes in the neat little bottle that you can clip on your vest with the neat holder. Unfortunatly, every time I crawl through the brush it dissapears. The cost is bothersome, but being on the river without the floatent it a real pain. I solved the problem with a piece of shoe lace and electrical tape. Tied knots in each end of 3" piece of shoelace, put it thru grommit on my vest, and taped the ends to the bottle. Works!! Why didn't I think of this years ago???