I have used the method of securing the line to the dolphin striker many times on the P16 and P18. You don't want to ever use the striker to tie the boat down to the trailer or to tow the boat if needed, but for a righting line the line should be tied to the rod and the moment on the rod with the line just below the beam is minimal and will never break or bend that 1/2" rod. Just never use a powerboat to pull it up or tow it from that point.