You can get them from your local Hobie dealer. The one I installed is the Hobie Bob. The problem with the retrofitting of one of these (at least on my Hobie 18) is that you have to rivet the pole that supports the float into the carbon comp tip. squeezing the rivets practically crushes the carbon material. I saw quite a few posts stating that when they flipped their catamaran the rivets popped right out from the impact. On this news I applied about 4 to 5 layers of fiberglass wrapped around the pole and onto the mast. I can guarantee that thing isn't going anywhere now. It is on there solid!

And as far as safety is concerned I guess it is about as "sissy" as waring a life jacket. Nobody really gives a Sh*t if you have a float on top of your mast or not.