I made it sound more complicated than it really is.... once I have the attachment points on the mast and on the deck, I will clip in to the the deck on each side and then snap it to the mast, and then the gin pole..... it will be only 2 lines with blocks on them.... about 30 seconds to untangle and hook up.The factory system incorporates the head sail halyard, which is connected to a strap at the end of the gin pole. Once the mast is secured with the head stay, you simply unhook the halyard. No need to climb the mast! (I always connect my unused halyard to the bow pulpit for added safety, since my CDI furler uses an internal halyard).
Your idea sounds interesting, but...I know you're concerned about lateral movement of the mast as it's being raised, which is why you designed the bridal system to keep things tight all the way. The side to side forces are really minimal, even though there is considerable sideways movement, no need to worry! The baby stays only keep the mast from falling sideways, but the Shrouds take over about half way up.
Your proposed system sounds like more trouble to setup. Why don't you just try using the same kind of system the 26's use? The MAC26S mast is 28' long.
The pic's Sum posted show the setup real well. I'm not sure this has been mentioned yet, but make sure the attachment on the deck for the block & tackle, i.e. bow cleat has good backing, and the deck is good and strong.
and yes.... I could just make it the same as all the others, as that has always worked well, but the only added expense here is the cost of the blocks, and I have to go thru all the same trouble and motions to do the initial install anyway, one more step wont hurt me.
if it doesnt work, then I can drop the blocks out of the system, hook the stays to their anchor points in plan "B", and use the halyard to the gin pole...
ONE THING...... I have set an 8ft 2x4 in the tabernacle to use as a dummy mast for trying to figure out a spot on the deck to attach baby stays. with the mast tabernacle about 10 inchs higher than the stay attachment on the deck, there is absolutely no geometrical location on the deck to prevent the length of the stay attachment points from changing to unacceptable lengths within the arc of the mast. at one point the shrouds will take the side movement out, but not before the baby stays have about 7-8 inches of slack. or become to tight that they have to be removed.
there will be unacceptable slack either while the mast is laying in the saddle, or, while it is nearing the upright position. there is no sweet spot to keep the slack within a barely acceptable 4-5 inches. AND yes, 8 inches of slack will keep the mast from falling, but I dont want to damage anything in the process of it all either.
Plan "B"....on the raised part of the cabin roof, at the front corner where it breaks toward the deck forward and to the side, that is the sweet spot. its 4 inches lower and about 4 inches forward of the tabernacle. at a distance of 24 inches from the middle. it would be unsightly to have anything mounted at that spot. that is why I have to try the other method I have planned before i put an attachment here.