How much should the coping stick out past the ramp surface or above the deck?
As with most things in ramp building this is a little bit of a personal preference thing. People have skated all sorts of stuff as coping, starting with it’s namesake, pool coping which stuck out far further than anyone ever thinks about now-a-days. That said, most of the time coping comes out wherever it ends up, because it’s a little hard to be exact enough about your construction to get it in the right place. but it can be done, and you should try. The amount the coping sticks up above the deck is the amount a skateboard wheel and truck, or a BMX peg has to hang on to. usually that’s chosen to be about a 1/4″. The amount the coping sticks past the ramp surface is what is used to pop the rider in towards the ramp when they hit it. If thats to big it’s kind of rough, and maybe not as fun. ( again, personal preferences. ) if it’s too small, especially on a mini, it can make some tricks feel a little less exciting.