Forget it: Install a spi instead, and you won't need a barberhauler anymore. The spi bring the wind so much forward, there is no need for it <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />

On my boat the jib blocks are fixed, permanently attached to the (dyneema) lines going along the trampoline. Downwind without a spi I sit leeward on the front of the tramp and hold the jib manually where I want it to be.

Before I got the spi I was thinking about a simple barberhauler. The solution I was going to use was a couple of plastic rings around the jib sheets and a line going from them to blocks on the end of the front beam. I was not planning for a cleat, just to have a loop long enough to hold it downwind from anywhere on the tramp. One line, two blocks, two plastic rings. Done.

Actually I may try to do that anyway as I made a small rip in my spi this week-end: I may not have my spi back for two weeks... (Long story short: Don't let the tiller go while you are raising the spi with the main cleated in 15knts of wind. The cat *will* turn around sharply, and capsize instantly...)