I've been using one of these for about 21/2 years pretty much daily.
www.teds.com.au/accessories Standard camera thread, I've got one of these
www.teds.com.au/gorillapod-ball-socket-head-for-slr-zoom on top of it for levelling and quick release.
I have the camera tied on independently to a leggie point or Stic It loop.
Suction pad has only let go once.Looking a bit corroded but still working.
No sign of damage to boards.