I have several layers of bottom paint building up, some has started to flake off. Kingman marine won't allow outside contractors to remove bottom paint, I understand this is a messy job, and sodablasting may create a mess. Kingman will sandblast, epoxy, and ablative paint 33' sailboat hull for $3000.oo This price seems high, their are no blisters on bottom, I'd prefer not to sandblast. Questions #1 Does this seem like an expensive job? #2 Is this necessary? #3 Should I take the boat to another yard that will sodablast or allow lic./outside contractors on their yard? Advice appreciated.