Took these pics while trying to decide which scope cover.  Due to the OTA overhang, I thought it would be hard to get a horizontal cover which adequately seals at the bottom, so I opted for a vertical cover Telegizmos T33D.  When talking through issues in the horizontal with the TG guy, he was talking about tucking excess cover under the base, and I thought this was a problem if the thing wanted to weathervane.  So that was the thing that made me decide to go vertical and ensure it doesn't weathervane.  The base is 70 lbs, and the OTA is also about 70 lbs, most of which is in the back, of course.  I'm thinking to strap the tube to the base near the bottom to make sure it stays vertical, some tie downs for the base, and if it's really windy, take off the upper cell and struts.  Cannot imagine that would blow over with the struts and upper cell removed, but don't know if all that extra length of cover will be a problem.