Bodysurf handboard shape

been bodysurfing for some time. but new to using handboards.

 

How much bearing do tails ( swallow, fish, pin) and wings and rails and such  have on a handboard’s performance, when there’s 200 lbs of human being attached to it sliding down the face?

 

The extra planing area aspect of the handboard is clear.

i think its more about surface area than anything else.