I was wondering about that as well. It sounds like bending the tips up would add to the dihedral which could help stability. I am on my second repair since I put my custom gear on. More practice would no doubt help but it could take a while at the rate I am going now. I am lucky to get three landings per crash.
I am starting to think a ballistic chute might be the way to go. I know from flying large airplanes that angle of attack is less in the outboard portions of the wings to allow for continued control of the aircraft at the onset of a stall. However if you hold the airplane in the stall long enough to reach a full stall one wing or the other will invariably drop depending on how coordinated the controls are.
This morning I googled washout and camber and a couple other terms and got educated. A bit confusing but found several good articles about this subject some here in RC Un.
Here is one of them.
http://www.rcgroups.com/forums/showthread.php?t=24323