My 1980 H33 has a halyard type line that fastens on the end of the boom, goes through a sheave at the mast top, and down to a cleat at the mast base. I have to loosen every time I hoist the main sail so that it does not affect sail shape. I do not know if this is original equipment but it works well for me. When reefing I can raise the boom with the topping lift while I pull in the reefing lines, all from the mast base.