Probably a bad location for a couple reasons.
Of course. But without any constraints or requirements from the OP, the first order answer is all one can really offer without inserting likely arbitrary or user-specific constraints. It was intended to spur a discussion of what the OP really needed, rather than just what is "best" since what is "best" for him is likely not the same as anyone else no matter how well it may work. The internet (and K0BG's site) is full of photos showing all manner of HF mobile installs so even a cursory search would yield many possibilities. With that resource available he asked here what was "best", so that's what I offered. Once he comes up with a list of likes and must haves, we can offer specifics that allow him to achieve his
goal and not what we did to reach ours. This is along the lines of knowing where you want to go before you get in the car and start driving.