I have a big problem righting the boat after the capsize though. I have to lower the sail about half way down the mast before I can get the boat to react to my body weight (I'm 160 lbs.)
Perhaps it is the wind direction? Should come up pretty easily even closer to 100 lbs righting weight.
Get the boat positioned so the wind is coming from ahead of the mast. You can step forward on the hull to make the boat pivot a bit.
Righting instructions.