I would definitely want the boat supported by the keel. The stands are for balance. I had a similar issue a couple years ago. I had my yard crew block the front and back of the keel the first year. They used 4 x 4s to give me a little room. Then the next year, I had them block the center. It worked pretty well but wasn't an instant fix. You can't do it overnight.
Islander 30, Bahama