« Reply #15 on: December 21, 2013, 11:58:40 AM »
I honestly wouldn't worry too much about and "points" on the rocks because no rock isn't going to balance on a single point. It will have at a very minimal 3-4 or more places that contact the glass so if you have say a 60lb rock that weight is distributed over at least 3,4 or more contact points so you don't have even 15-20lbs of pressure at any given point which is not enough to even worry about.
Typo corrected
« Last Edit: December 21, 2013, 04:09:15 PM by Steve »
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