One of the main reasons you don't want play in your bindings is because the speed is much greater than most skating and surfing. But also the way a surfboard and skateboard turn are very different to snowboards. The edge on the snowboard is much more specific than on a surfboard, and trucks on your sk8 is just different physics entirely. Check out the new NOW bindings, they move a little.
Not sure what you mean about those straps, but check out Flow, they are the most popular non-traditional binding strap alternative(GNU and K2 have similar offerings). Also Ride made Contrabands but I have a feeling they are going to stop because the design was inherently flawed.
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