The purpose of a negative length swinger is to improve handling. It will improve traction, cornering, sliding, flying, and overall better handling. As far as wheelies go, the obvious answer is yes, it is very easy to stand the bike up. The - length swinger isn't for everybody, but those people that have had either a -1 or -2 love them. You must re-learn to ride you bike or it can bite you in the ass!