Matt,
If you don't mind removing your existing deck pads you could try our Rampz Padz.
They are not made of EVA like the standard pads that come with modern boards, the material is a lot tougher and grips your feet better when wet.
It's the same material you find inside Gath Helmets.
They are shaped to suit your foot profile also.
It looks like F2 have changed to this material on the latest boards, my new Stoke has moulded pads, not machined grooves like other brands and it also seems to work better than EVA when wet.

Paul