This move can get old though, so don't overdo it. I've seen people do headstands while skimming. I wouldn't recommend this. Once you have mastered the basic skimboard moves, and have developed your balance, your ready to start skimming at a downward angle into the waves and try to surf back in on them. Wood boards don't do very well in deep water unless you have alot of momentum.
Foam boards are more buoyant and better suited for deep water.
Don't try to skim into large waves until you have mastered your balance on the smaller waves. If you don't, your going to wipe out and possibly get injured or lose your board. Good skimboarders try stay on the board. I see many young kids every year purposely doing bonzai kamikaze attacks on big waves, only to go flying through the air and come crashing down into deep water while there board is being taken out to sea. Yea, the wipe-outs look cool, but it takes alot more skill to stay on your board and ride it out than it does to jump off your board.