I have 2 of them on my boat and I would not recommend the articulating mount to anyone. I have already broke both sides off, the problem is where the set screw is at the articulating point, there might be 3/8" of threads there that hold the two pieces together and that just isn't enough with aluminum. I guess if you put a heli coil in there after you drilled the hole all the way through it would be fine but would look like crap.
Here is what I am talking about.