Respectfully to all, I have to say that IMHO the 'solution' above is too darn close to suicide to be a practical plan. You might just get lucky and get away with it; but based on my work with fall protection in industry, the math is totally against you. The forces involved are ten times what you think they are, and I would hate to have this site implicated in a recovery. You can do what you want of course, but that's my $0.02. Good luck.