You place your supports against the hull
wherever there are internal bulkheads. If you do not know where the bulkheads are located, just walk along the hull
and tap the hull with your knuckles and use your ear. The same applies to where you have the crane or travel-lift slings located when taking the boat
out the water
- only where the bulkheads are located. On other way is to look in the owners manual. If you do not have an owners manual, join the Leopard Catamaran
Group on Yahoo Groups - PDF copies of the manuals
are available on the group site.