I've had my P-18 since about 1988. I've always run the righting line from the dolphin striker over the top hull. With two people, righting is fairly simple as long as the mast is pointed upwind. I've even managed to right it with my wife (102 lbs soaking wet)as crew. (well, she was skipper when we dumped!)
These days I also carry a Solo`Right whether I have a crew or not. That gives me an extra margin for righting in case we get tired/cold etc.
Sheldon
P-18