thanks for the suggestion. i'm not sure if a thicker sole would solve the
problem that the deck boards are 1/2" apart and not all perfectly level.
we wear sneakers or shoes. the sneakers grip too much, so you can't
swivel and the shoes slide too much if they have leather soles.
sacrificing a pair of ghillies might be a problem for some, especially if they
already have a siliconed non-slip pair. but i will raise the point for
it reminded me that i "invented" a non-slip alternative to silicone which
sacrifice the ghillies. it is a flexible rubber (or latex) "half-sock", just
part", which you simply pull on to the front part of the ghilly. it provides
under the ball of the foot, and stays on because it fits the foot and because
normal action and reaction tends to keep it on. if made out of your material
it could serve a different purpose. OR, it could be a shaped piece with
straps that you would mould to the shape of your foot.