Hi Pipster
The old type mouse mat was some sort of foam compound that was slightly tacky so the mouse wheel would go round, (you had to clean the wheel ) that is why it sticks to your hulls, I have been using foam pipe lagging for may years, it does compress with the weight of the hull, taking up the fine lines of the hull.
People from my club use draft excluder, old snooker table felt, conveyer belt rubber strip, its to protect the hull and look reasonable when the boat is sailing.
I do agree that the boat spends more time on its stand than sailing.
Mark