Guys:
A long time ago, (back in 2010-2011 sometime), I was planning to build a boom for my TI, (never actually made it, (I went with jibs and spinnakers instead).
But it wasn't a bad idea, I posted it on the forum at the time, but I'm sure that would be really hard to find now. I found the old pic that I posted.
Basically what your seeing is two curved aluminum tubes, ( you would need to hand bend the tubing). Attached to each other on the ends with some type of wing nuts and bolts, (easily removed).
The rear would be attached to the sail clew.
The front is attached to a rope suspended from the mast topper, (or anything convienent up there, (obviously if you don't have a mast topper you would need to build something). A fixed length rope could be used, (that clips to the boom on the front). In my case I would just use one of my halyard lines, (so I could raise the front of the boom way high (or way low) to clear the spinnaker, when the spinnaker was deployed).
The only thing attached at the front is just that rope, (it's not attached to the mast at all) so the main can be furled/unfurled at will.
Breakdown would be very easy, just remove one of the bolts, and toss the thing into the hull for transport. The tube rubs against the sail, so you may need to put velcro or something on the inside surface of the tubes to prevent wear on the sail. I hadn't thought it all thru, and like I said I never did build it. Ended up with a 135 sq ft spinnaker on a rotofurler instead, (Hobies new spinnaker is 79 sq ft).
Don't ask too many questions, because I don't remember much detail wise, this goes way back, you would need to figure out the details yourself.
just throwin it out there.
FE