The Dana 24 from Pacific Seacraft came with a 3 axle trailer if you wanted to purchase it. That boat might fit your trailerable + gulfstream capable. I don't have a picture of one on a trailer, nor do I know what kind of vehicle you need to pull one with, but it had a fixed keel and was ocean capable.
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1980 Pacific Seacraft Orion 27
Sailing Grounds: Southern California