However judging from the 3 video's above and this 1
http://www.eldonmo.com/video/2006_mcddd_video2.wmv the tip's actually keep the Bad Boy more stable in a normal harrier/hover/flat spin.
So you might want to keep your tips until you can harrier/hover very easy. Then if you deside you want to change the performance clip those wings for a wild ride.