We have a Karcher 1600 psi washer and are into our third season with it; it washes two boats regularly and hasn't skipped a beat.
We originally decided to go with the lower pressure model so as to not damage the gelcoat. If we were to do it again I'd go with the more powerful 2400 psi model. With the lower pressure you need to put the nozzle 2-3" away from the cleaning surface so the narrow band of cleaning you get takes a long time to clean the entire boat. With a more powerful model you would make broader swathes while holding the nozzle further away from the surface.
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Conrad
Berthed in
Campbell River BC
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