Welcome to Pond Boss.
Little Giant makes so many pumps, it is a little difficult to make a suggestion without knowing which series it is. I have one of their small fountain pumps, and I think I could float it by attaching it to a piece of 1-1/2 or 2-inch blue insulating board. If it is like mine, it would have to be attached to the bottom side of the board so that it is always submerged. Mine has a removable filter that needs periodic cleaning. You'd have to make sure you could reasonably be able to get at it.
Ken
