I doubt you need to drop the keel and have it rebedded. What prompted your surveyor to make that call?The technical support group at Catalina Yachts has a set of 6 drawings they can fax you detailing keel repairs.My Cat 30 had a crack on both sides of the keel where flexing of the years had broken the roving and knitted cloth layups. Upon grinding this material away, the underlying keel stub and bedding was dry and solid, with no evidence of damage. Relaminated using the factory's recommended schedule laying up knitted cloth and roving in MarineTex.Unless you have carbon steel keel bolts, and unless you have rot in the fatwood, I wouldn't even think of doing anything beyond repairing the hull to keel joint. And repairing damage to keel bolts or fatwood below the bilge doesn't require dropping the keel.Good luck,JamesS/V TesoriDana Point, CA