I don't think so...
> 1. A major selling point for the Potter is its light weight, especially
> towing
Yes. However the weight of significantly useful ballast is a fairly
small percentage of the total weight of the boat, and would not
significantly affect the trailering. The weight of Potters varies
with vintage, anyway.
> 2. the only way to make an effective sailboat out of the Potter is to
> add weight
Potters sail just fine without adding weight. The extra weight being
talked about is either for 1) affecting the trim of the boat; or 2)
giving increased stability in fairly extrememe conditions. That is,
fine tuning to appease the obsessions of the owner.
> 3. The same weigh that makes effective ballast (in any material) weighs
> just as much on land, and on the trailer, as it does on the water.
Sure, however the amount of weight is not that big a deal.
-- Kent Crispin "Do good, and you'll be kent@songbird.com lonesome." -- Mark Twain