I'm new to Dish and ordered a 2H/2J installation in a few weeks. LOS requires a roof mount and I want to use a Commdeck as I've had good luck with them. My questions are: 1. Will tech mount antenna on Commdeck? 2. What are the options for determining a suitable location for the Commdeck before the installer arrives? In other words, I'm reluctant to mount it based on dishpointer.com and the DP AR Pro app. 3. Would I be better off having a custom installer help with Commdeck location prior to Dish tech appointment? Do the entire install? Does Dish allow this? Thanks for advice! Excited about Hopper!