Its an easy job if you think before you drill. I'm bad about that! As I said on a thread early this year on this:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Amen on the caution to double check before drilling. I DID drill where the decal was and drilled all the way into the cabin...ooops. It worked out ok because I needed a second hole inside anyway for the elevation meter but I would have preferred it somewhere else. (we just use the manual Winegard and very happy with it.) It is an easy job as everyone has said. I will make another suggestion. Winnie saved 50 cents by only running one coax. We don't watch live TV if we can avoid it and use a DVR. You will want 2 coax's so that you can watch one and record another; record 2, etc.I used the existing Winnie coax as the "fish tape" and attached 2 coax's on it. Then I pulled the single fish coax from the cabinet and got the 2 coax's pulled into the area where the sat receiver sits. An easy job, if you do it at this stage.
The decal on the roof that is marked indicates where the hole for the coax and little wires for the elevation sensor are. Thus you only drill through the roof, not into the cabin here. You then position the antenna base away from that a prescribed distance (read the directions!) and that is where you drill all the way into the cabin for the crank & turn mechanism. I screwed this up but did a nice recovery. Also have a couple of tubes of self leveling "caulk" that Winnie proscribes for the roof. It works VERY well and we've had no leaks.
If you tackle this, it really is easy and you can save several hundred $. Be glad to chat with you more if you need, phone or email.
On edit: here's a link to the thread I mentioned Click