I debated a chassis battery disconnect but decided the risk of untimely disconnect through vibration or failure was not worth the convenience.
On the other hand, I bought
THIS BATTERY DISCONNECT for our house batteries. I recently installed it and it works great. Its low-profile works with our taller 6V batteries placed in our 12V battery compartment.

Our batteries are 6V AGM (maintenance-free), hence the practicality of pitching the battery tray to increase clearance. I installed these back in 2015 (9 years ago) and they have not budged since.

With our extra tall 6V batteries, the horizontal version works with little room to spare. We can easily reach in and power up or down as called for.
