Get them repaired. If repaired properly they will be better than new. Sounds like about $250 repair job to me. Just guessing. So if you can do it yourself you could do it for probably $25. Things you need to repair it.
1. Dual Action Air powered sander ( and access to a large compressor). 100 grit paper should do it.
2. Fibreglass tape.
3. Resin and catalyst.
4. Gelcoat.
5. PVA.
6. Lots of different grit sandpaper and a sanding block. 220, 400, 800.
7. Time.
Good Luck,
Mike Hill
H20 #791