Personally, I don't think much of the C30 internal outhaul. I think it was poorly designed. The vast majority of C30's I've been on have the outhaul jambed. That makes it like the broken clock - the setting is right for some point of sail and wind condition and wrong for all others. As a results most sailors don't bother with the outhaul and that is a shame as it is a very importnat sail trim control. You can't adjust draft depth without the outhaul!!
I tried to fix mine. I took the boom off the boat and brought it home. First problem was getting the end caps off. I would have had to drill them out and I was sure I'd break one of the 2 cheap pot metal caps in the process so I scraped that project and painted the boom.
I felt there had to be a better way and I dreamed one up. There is another problem with the internal system that I wanted to eliminate. The way the outhaul lines pulls is downward. In other words, as the slug moves aft in the track this motion causes the slug to dig into the boom and that creates a lot of friction. It is easier to watch it happen than to describe it.
The FIX was simple. I purchased two small Harken triple blocks (expensive little buggers but worth it). One was attached to the tang on the end of the boom and the other to the slug. I installed a turning block so the outhaul line could follow the line of the boom forward to where it normally comes out of the boom and there I installed a small cleat. The result was a more efficent outhaul and a horizontal pulling motion so the slugs slides easily. It took me longer to buy the blocks and figure out how to hook it up than it did to finally install it.
A friend of mine took it a step further. He installed a short track at the end of the boom and had Garhauer build a small car. That system works slicker than mine but involves more money and the clew of the sail has to be notched.
