I'm going to try these. Heard they have grip and are flexible.
I recommend a high top skateboard sneaker.. Something very flat..
Any Flat bottom shoe really.
Just get some Vans man. They look great, and come in many different styles. I like to wear the ones without laces for convenience. Vans.com
Vans are not great to walk long distances in because they dont have a very cushiony insole. However it makes them better for board sports because your foot can feel and control the angle of the board easier.
I just picked up a pair of these. I love them, it gives me a feeling of a little better controll over the athletic shoes I was wearing. http://store.nike.com/us/en_us/pd/sb-stefan-janoski-max-unisex-shoe/pid-10630334/pgid-1531601
I wear Chuck Taylors high tops
I might have to grab some of these for the beach: http://www.vans.com/shop/mens-new-and-popular-arrivals/mens-slide-on-4kiix8