I'm a new owner and sailor. Please forgive my use of the wrong terms. I have a Sirius 21. I'm not sure I have the original or correct boom mount (gooseneck). Where on the mast should the boom be connected, above or below the slot, and what would be the right distance from the bottom of the mast to the boom. What holds the boom in the right hight. Currently I am putting the boom slug in the slot and let it follow the sail up the mast track. The only thing I have to hold the boom down is the vang. I am ordering a new mainsail so an accurate measurement is important. Any advice will be a greatly appreciated. Any pictures will be very helpful also.
Cecil A
Cecil A