We just mounted our external TV on a swivel too. I found
this one on amazon. It works pretty well and it allows us to cut the glare.
Pros:
Not overly expensive
Allows tilt up & down & side to side
Screws allow to adjust rotate TV to be level to ground.
Locking mechanism is neat and in theory avoids chaffing of tv on hatch lid/door
Clears hatch door with no problem
Cons:
1. No easy mount bracket that mounts of back of TV. You have to hold TV up with one hand while screwing in screws with the other hand. Our home tv swivel brackets all have brackets that screw to back of TV that then you just hang TV on wall bracket and they click into place
2. The locking mechanism doesn't engage by just pushing the tv back. You have to reach behind and push arm of bracket all the way back first, the push tv. Kinda hokey but works.
3. Lock Release pull cord takes a fair bit more effort than one would expect. That may be in part because of the speaker shelf bumpout in the sheetmetal the prevents a straight down pull action.
If you look at the picture with just the bracket mounted, there are a lot of holes that allow un tempered air and bugs in from the outside. But the also give good access to kitchen plumbing and tv wiring. So our solution was to just cover them up with flex seal tape as shown in the second pic.