In reading the manual posted here, it says, I think, the length of the sail foot is 10'. My boom is 10' 3", which seems to not provide enough length to pull the foot in the out haul to get good tension. Since so many other things in the rigging seemed unusual, I wondered if I have some other boat's boom (or mainsail). So, how long is your boom? How long should it be, and how long should the sail foot be?
Since I plan to get a new mainsail next year, I wanted to decide it it was cheaper to have the sail made with a narrower foot, or to get a standard sail and buy a new boom.