We've learned for you that using bungee cords to secure the tarp can cause problems on the painted surface of freeboard. The constant close contact of the tarp causes spots on the paint to bubble and eventually chip off.
Which is really a pity, since whatever PO who did the paint job on our boat did a really nice job.
However we also found that taping foam pipe insulation on areas that can potentially poke through (like stanchions) works pretty well.
All that being said, we are still looking for the perfect technique.