I once invented the following to downhaul race races that were rigged on badly corroded pulleys, while hanging from the clue.. These extensions were so bad it was an effort to downhaul a 5.3.. Anyway it's pretty obvious, just an extra extension in series.. I could downhaul a 9.5 with just one finger.
Why risk your back? get a whinch you'll never look back..hee hee that rhymes..I couldn't get by without mine.