I have had the "opportunity" to try righting a boat with Gary's solo-right system. It was unplanned and i was by myself in the middle of the lake, so i had to try it. I weigh about 160 lbs maybe 165 with harness and jacket on. The wind was around 5-10knots and I couldn't get it up. It's tricky balancing while walking out on the bar, a somewhat sturdier, flatter bar would help. Even so, the mast would not come up. Fortunately I brought along a small rudder bag to use as a righting bag, and once I got about 20 lbs. of water in it, the boat slowly came up.
It comes up slow, and there's really no worry of getting hit by the top hull coming down. You're basically standing upright and just lean forward to grab the low hull. Was it worth the $50 I paid for it just for that one righting and the peace of mind it carries along with it? sure.