I came to the same conclusion and made up a very usable lazy jack system for under $30 for my tartan 34c. It's been in use for 5 years and does the job nicely. I used nylon parachute line sold at most marine
stores, two brass rings as the junction points where the lazy jacks split to the fore and aft of the boom. Two pad eyes on the under side of the boom to loop the lines. The top of the lazy jacks are tied to the spreaders along side the mast
. This is a fixed system. I tried it first without the padeyes to test the position and concept
. The loads are very light, so the light line seems to work fine.