Ja its fun but as DC says it can be detrimental to ur face and ur lower back as I found out the hard way!!!
Couple yrs ago i came out of a small surf and all my buddies were skimming and hitting it, so there's me with my vipers still on deciding to give it a go.
Clocked up as much speed as I could and launched into the flats picturing a massive insane bust only to find out i let the water run too thin
Results = 1 x heaviest nosedive into practically dry sand which filled my mouth acting as a handbrake, and 1 x supercontorted back wherebye I could see my vipers infront of my face!!!!!!!!!
Never skimmed since boet.
As far as hurting ur board, we had dow and arcel cores in those day and PP was like brand new so there were a few lil deck creases to be had aswell as some scratches on ur slick.
Nowdays i dont think it'll hurt too bad unless ur going big or hitting wrong.
Laters.