Affordable Service Plans: Hull Cleaning: Weekly - Bi-Weekly - Monthly Most sailboat racing fleets use divers to clean their hull once per week or every two weeks for optimum performance. Power boats and yachts get cleaned every month or so. Zinc Replacements: We automatically replace your zinc's when needed. This is a definite must! We charge for the zinc's and a small installation fee. If you know the size of your zinc's, please let us know and we will keep the information on file. Propeller Servicing: We pull propellers, get them repaired and reinstall them quickly. Please let us know if you will be needing propeller service as soon as possible in order for us to schedule you. We understand that damage can be done at any time, so do not hesitate to call 24 hour a day!