As much as I hate to, sometimes I use the floater bubbles. In order to make the frogs float a 5/0 hook, the mix of plastic to bubbles HAS TO BE 1:1. That's right, 1:1. I typically will do 4 oz. bubbles (by volume) to 4 oz. Plastisol. The frogs will float, but they will be a bit stiffer.
and, yes, I make sure to have my respirator on before I even open the jar of bubbles.