Cheap/Quick Alternative to Footholds???

[Waste Land]

is it okay to just screw some typ of wood/plastic screws in the tray to mount the footholds? or is it some kind of foam that must be kept out of water? or is it just plastic down to where the jet-unit sits? i have some straps/footholds from an old wakeboard i wanna try out:headbang: something like Idoks last pics...

You can use justa bout any kind of screw but with installs hwere holes are made in your ski....the screws or screw holes are usually overed by a layer of glass to keep water.