it's lenghth and width
The smallest skateboard size is about 7 inches in width by about 24 inches in length. The skateboard is legal size for contests and events.
8.0
Doesn't matter
it might depend on the size of the skateboard but mine are 2 inches exactly
no
8.000
7.75 by 31
yes you can
7.8
7.75x31.0
it depends on what size your feet are
anything that is 8 or over