In Santa Cruz CA, they
have a bridge that separates the "high rent district" (with open acccess to the ocean) from the low rent (having to go under a bridge with about 15ft clearance). Everybody who is financially impaired, or who doesn't want to endure the 8-12 year wait for a slip on the "right side" of the bridge, runs a tabernacle, with the backstay and aft lowers on some type of easily releasable yet secure connection (hyfield lever?).They disconnect the backstay and the aft lowers, and push the mast forward on the tabernacle, using the boom and the mainsheet as a "crane" to control it as it goes toward horizontal. The upper shrouds control it from going sideways. The mast doesn't go all the way horizontal, instead maybe to 30-45 degrees+/- to horizontal -just enough to get under the bridge. Once they pass under the bridge, they sheet in on the mainsheet, the mast comes back up to vertical, they re-connect the shrouds and backstay, and off they go! All done underway under power-takes maybe 5 minutes at the most.If you ever get to NorCal, check out Santa Cruz!