Hi,
I too (at 150 lbs) have tried to rgiht my cat (Hobie FX-One) by myself with a righting pole, and have failed. I was hanging on the end with my hands AND feet around the very end (like a monkey, nothing in the water), bows to the wind, etc and couldn't budge it.
Since then, I have modifed it slightly by adding a pulley at the end and a line to hoist the Murray's water bag (which holds 88 lbs of water) first, then my weight. I haven't tried it yet. Somehow I feel like flipping my boat on purpose to try the new and improved righting system is like setting your house on fire to test the fire extinguisher (So I exaggerate a little).
An image of this proposed system can be found at:
http://images.ofoto.com/photos246/5/74/20/93/17/0/17932074503_0_ALB.jpgOr, I will try inserting it here, (but it usually doesn't work from the free OFOTO site)
Let me know what you think.
Good luck!
Steve