Here's a post from a guy who righted an Inter 20, with his wife *sitting astride the lower hull*



Inter 20 righting story



From the context, I honestly don't believe he was writing to advertise the pole in any way. Maybe having his wife on the hull kept it pointing up longer?



Or look at the photos - those two are less than 80% of way to the end of the pole.(second pix, starting to lift the boat, she's at half way, he's just past 3/4) The pix demonstrates that there's reserve leverage.



So much for leverage. It simply *can* be done. Figure out how, instead of "proving" it's impossible. Maybe somebody should ask the guy with the inter 20. I think Tami's said she's got one she built herself.



As to the attachment, I'm sorry to differ with Rick, but I do stand by my analysis. To elaborate.



The plate in the Murrays version demands to be mounted about half way between the striker and the tramp. This so the base of the pole is sufficiently out from under the D-striker so that you can aim the pole perpendicular to the hulls. Mounting closer to the tramp will only aggravate the following problem:



The plate is flat (except for a recess into which a 2 inch long universal joint is bolted) The two rivet holes are inline with the centerline of the plate.



So the Uni-joint sticks out, pointing aft and somewhat away from the tramp, *but not perpendicular to the hulls* The Pole, while in use, *must* be perpendicular to the hulls. So the poll is pushing on the U joint at an angle!! This is critical because it means that the force expressed on the plate by the U-joint is a 'rocking' or 'tipping' motion, *not* sideways at all!! The closer you mount the plate to the tramp, the greater the angle, and the stronger the 'rocking' force.



And if you 'rock' a flat plane against a curved surface, with a fastener between them at the point of contact, you've just duplicated the physics of a claw hammer pulling a nail. In this system, the Fulcrum is right next to the load, virtually in the same place, meaning when you do the math, it's a near infinite force multiplier, which neatly overwhelms the 'mere' 2 inch moment of the U-joint - especially when you convert a 150 lb sailor's weight with the help of the pole's rig into at least 3 or 4 times that amount of force pushing in on the pole.



For durability, you must build up a platform and rivet at the corners of that plate, not the middle of the short ends.



But hey, I could be wrong.