I wouldn't go anywhere near open ocean in a Vacationer, or any other unballasted, flat bottom boat. It's just not suited to that kind of use. Round bilges, a deep keel, and lots of lead ballast are needed to keep a boat upright in heavy winds and seas.
Much like Ray, I have two boats, a Hunter 30 for open water (even with that, I stick close to the coast) cruising, and my Weekender for trailering to new, distant waters. There may be an easily trailerable boat that would be safe in the ocean, but I can't think of one.
There are, of course, daredeviles and sailors of tremendous experience who do sail in bluewater in somepretty marginal boats, but for the average Joe sailor, it's too dang risky.