I would really appreciate some input from someone who has a buttress free pool or has installed one IN AN AREA WHERE THERE IS FROST AND FREEZING WEATHER. We were completely freaked out when reading another post on this board where the poster indicated putting blocks under the uprights where there is frost will cause the wall to buckle when there are frost heaves. We NEED to know soon because install is only weeks away, we want to do it right. The local pool stores (closest one is 125 miles away) will not provide advice because we did not buy from them (they didn't have a buttress free model anyway) nor will they install this far away. We are on our own. PLEASE HELP!!! thank you.