I found your post looking for something else, I have looked at the
ICW and thought that I may need a contingency plan aboard when I decide to travel South from L.I. My vessel is about 60 ft in height and draws 7.5 ft.
Home Depot sells a bag called the “bagster” by (Waste Management) WM, it’s a soft garbage container it can be folded and stowed, I think they start at 50$
Encouragement:
Humans built the pyramids with
rope,
logs, chisels and an abacus.
Rigging your vessel to safely pass under a bridge “sailboat limbo” is nor an abstract or dangerous
concept.
Leverage is your friend, you will not need 1,000. Lbs, the further you get the load line away from the high point the easier it will be to heel the vessel over is it a fixed
keel?
IF you have a static load line of 60m (this is standard climbing length) I would snake it around your
keel (make sure their are no barnacles) ,
knot it above the toe rail for visual
security, run the static line over the top of the
mast “captured” and chafe free and down the other side. going over the
mast from the keel will transfer the load to a downward force *mostly, and will reduce the diagonal/horizontal load on your
rigging.
Then it’s a question of how far you need to get the vessel sideways, how much
water it will take(how much load you will need). And maybe the most important part of the equation
...how far you can get the load out board?
Spinnaker pole or maybe the boom? And you will need to be able to raise it the further over the vessel goes the higher the load will need to be as not to drag in the
water.