I have been really happy with the Water Skeeter stripping apron that came with my wife's boat (fortunatly she doesn't fish!.)

You wear this around your waist, so it moves with you. No snaps or attachment to deal with if you leave the boat. It works sitting, standing and also works well in the rear seat of my drift boat.

http://www.oregonfishing.com/detail.aspx?ID=27