Recutting a used genoa
Cutting the foot is the most prudent way to go (if the current leech is in good shape and is (not blown-out or tripped)... leaving you with reinstallation of the the tack and clew. However, the problem that you will have is setting the **proper bolt rope tension or luff tape tension**, and precisely setting in the cringles - whether pressed-in rings or d-rings..... and it is a LOT of hand work involved for a proper rebuild. In any sail construction, its the ''hand-work'' that take the most amount of time ($). If the sail has any value left in it, I''d take it to a sailmaker and spend the bucks to insure a well done job... as its not just a question of "slicing off"" some part of the sail.