I've never flown the GP 182 but I did have the hangar 9 182 with 69" WS and it did'nt seem to be to bad about tip stalling, it landed very nice for me and it had the same tips on the wing.
There has been talk of stall strips around our field but never tried.
I've wanted to try them but the 182 is gone now and my ultra stick needs no help at all, Makes me look like a pro. This is what I was thinking about, make the stall strips and form them to the front of the wing then use rubber bands to hold them in place.
fly it, you could make them large and work them down after each flight if you wanted. then when you get ready you can remove them completely.
Might work might NOT.
Personally I think you would be better for it in the long run (as far as developing flight skills) if you learn to fly the airframe as designed.

Miloh.