As a long time cat sailor, we used to have this discussion about tethering ourselves to the boat since we did lots of solo sails. Some of my friends would tie the end of the main sheet to their harnesses; others would leave a trailing line. I opted for none of these. If the trap broke and I went overboard, there is little chance I could grab a trailing line with the boat going at speed. It would just either rip my arm off or I'd get rope burns. Additionally, I didn't want lots of extra lines in the water to get tangled in. It's hard enough to get off a trapeze in some capsizes as it is. So my solution was just to try to sail near others or be very careful when out solo. Actually one of the reasons I just sold my cat and purchased the Laser was because i prefer to be a bit more self-sufficient in capsizes. And I still sail cautiously even in the Laser. In bigger winds, I'll just duck in and out of the harbor mouth and play inside. With the smaller cockpit of the Laser, I wouldn't want to have more lines to mess with. I agree with the posts above; hang onto the main if you can.