Our P42 has eight sheet stoppers, four on each side. In the process of adding a cruising chute, I had to vacate one of the stoppers for the chute halyard. What I decided to do was move the working end of the topping lift sheet from the stopper to the end of the boom, which actually works much better.

I used the starboard mast cleat to secure the now bitter end of the topping lift. Then I added two blocks at the end of the boom. The one on the boom end is a standard single becket block. The new working end of the topping lift is connected to a single becket block with integrated cam cleat. Both three inch blocks came from a local marine exchange for $30 total.

The link below connects you to the Photo Forum project that I recently completed that works quite well on our boat. I can access the topping lift from the cockpit area and it freed a sheet stopper for the spin halyard,

http://www.sailboatowners.com/upload/display.tpl?folder=73319661009 and fno=17