This is as simple as they get and can be stored in the shower. Wash or rinse takes a max of 15 minutes and spin is 5 minutes. Fill with warm water from sink using bucket. Cheap at £94. see reviews on Amazon. Works very well and spin is very good. It#s very low power.
Apparently the people we purchased it off never used shore power they only used to run the engine for their needs to this is good re hull right?
Unfortunately - not necessarily.
If the boat has been in a marina or moored near boats 'hooked-up' to a land-line then the electricity could 'leak' from anywhere and cause pits on any boat, pontoon or metallic structure in the vicinity.