Leland on Loon Aquel Dry Fly Floatant For keeping bugs on the surface, and keeping trout looking up, pick up a couple bottles of Loon Aquel Dry Fly Floatant. Silicon based and environmentally safe, Loon Aquel is, we think, the best fly floatant available. When rubbed into the hackles and body of your dry fly, Loon Aquel will help the fly retain its buoyancy, even on broken rapids and pourovers.