Running a 90 GLS. Agree on the 5200 for that purpose. I made my decision based on this article.
https://www.practical-sailor.com/boat-maintenance/marine-sealant-adhesion-tests
When I was thinking about trees, I considered the Milleniums because of the price. Much less that others, for sure. I've seen decent reviews for them on other forums.
On my 16' Smoker, I mounted it to the bow seat post as well, due to the trolling motor. However, I would have preferred it on the bow. Now, I run inlines for the reasons mentioned as well as..I hated the boards taking up so much room.
Keep in mind other factors may play a roll and interfere as well depending..... VHF Antenna, Bimini Top, etc. There will always be something! Just move stuff while fishing. NBD