Jwinds - I use my barbless / single hooked lures during regular season.
I figure I'm catching on them in PSCR - why change them out ?
IMHO - once water hits about 55* and fish have spawned - they are much more aggressive. Stingers are not really needed - just about anything over 28'' will engulf a lure.
When I use stingers - I use a much lighter one. Mustad 34007 in 7/0 or 8/0.
Some stingers are so thick / big they destroy a lot of the shad's action.
Watch a shad on a lure with no stinger vs one with stinger hook.
Funny story about this one from fall 2012.
It hit a PSCR lure and once landed - guy said " The stinger hook is missing ". I explained it was never one and lure was barbless.
He shook his head - saying if he had known that - he would have lost the fish