Launching off a concrete ramp is kind of difficult with beach cats. You sure there isn't any grass or sand near the ramp that you could pull the boat up onto?
I once launched at a concrete ramp that wasn't busy. I brought some carpet with me and rigged the boat while it was sitting on the carpet at the bottom of the ramp. Then I just slid it off the carpet into the water, threw the carpet off to the side, and sailed away. Retrieval was a little more difficult.
- A project I'm working on that may be useful to Hobie sailors in need of custom parts or other projects you may be working on