Household dishwashing detergent....... diluted of course. I tried cable pulling lube but thought it was ordinary at best.
Went out one fine morning and forgot we'd run out the previous day and my ski buddy was getting ready when we finally realised......... ohh the horror!!! No way his foot fits without it.
Looked everywhere in the boat for a cake of soap, sunscreen, anything we could use. Stoppped short of using the oil on the dipstick, but what would you consider as appropriate in this instance?