D* came out today to do the install. Wife was concerned about bolting thru the roof. Installer said they have another metal platform system that looks something like a vent that attaches to the shingles and they don't need to lag through the shingles. The cost for this is $150. Is that reasonable? Have you heard of this type of thing? We are setup for a new install with this in a couple of days. The tech said the shingles we have are really thick and narrow and would be difficult to mount flat without this system. He wasn't pushing for this. It was our concern about horror stories of leaking roofs. Are leaking roofs something to be concerned about? Would D* pay for this install due to our shingles being too thick for the normal install?