if you look at how much the bike weighs, not to mention how much the front wheel, fork assembly etc weighs, its amazing this bike does wheelies as easily as it does.
lower your tire pressure for more traction, and give it hell, of course you also risk wreckign your bike, or slamming your front end down too hard and damaging your bike. BUT thats your call
I went crazy with the wheelies after I made a few mods, but then quickly realized I'm not really experienced in this area, and after a few close calls realized Id rather not wreck my bike, and restrain my wheelies to dragstrip launches...