Brian- that looks like it's quickly turning into a reef for fish habitat
Denise- as others have said a hole that hasn't torn loose bulkheads or engine mounts
or done damage to tanks etc is usually an easy and permanent repair
. You would have to factor in the cost of painting at least one side of the hull if it had been previously painted and the hole was above waterline, and matching faded gelcoat is almost impossible to do perfectly so if above waterline there might be some cosmetic issues.