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Brilliant. Makes sense. Will try it today.

One more question. I normally use the bunks as an indicator of how deep to back up trailer. As in, I try to have about the front 1/3 of the bunks out of the water. This seemed to work well on my prior boats. Perhaps it is leading me astray on my present boat. You are suggesting a fender reference. Is there any advantage?

I've always wondered if my bunk-reference is faulty due to incline angle of ramps, which varies.