$1K. The 20' is actually 19'8". If it's an OB with no console obstruction, and you measure from nose to the transom engine mount center instead of a line parallel with the hull cap, a straight tape'll measure 19'6" because of the transom angle.
My Seafari is supposedly 19'8", and when re-powering a couple of months ago, we backed it up to a wall, then measured from the wall to a plumb dropped from the nose, which gave us a measurement of 19'5 1/2". Before mounting the 90 Opti, we then weighed the boat and the trailer, then the trailer separately, and got a hull weight with no fuel of 1966 lbs, including seats and batteries and CG equip.
I did all this to try to get better rates on insurance having exact measurements and weight. It didn't help my rates, and I spent $10 to weigh the trailer twice
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury