Lay a towel over your board and soak in turps (not thinners) , let it sit for a few hours and it just peels off. Make sure you don't have any cracks in the board it will eat the foam. Just keep rubbing the residue with clean rags soaked with turps and finish with wax and grease remover. Boom... make sure you have beer on board be patient

This works really great with deck grips not sure on monster traction , if it doesn't work first time round do it again and add black plastic over the towel and leave in the sun for a couple of hours or in the shade overnight.

I just added a bit more to up top but no turps is fine I've have done this heaps of times. Use caution if it's custom with polyester resin or some Chinese special , then be very careful. Maybe just try a small section first.

If that's case should have been glassed by DC or Deep so should be fine , but try a small section first.

Yep 8 hours in with turps no dice