The 360-1200 is a mighty view and a beast to haul around. Fortunately, all the internals are sized accordingly so at least should be easy to work with.
If this be the first version(s), the tripod mount is pitiful. To be precise, the L-shaped handle itself is solid enough, but there is just a small platform in the end where a tiny 1/4" screw is supposed to keep all the mass and forces under control
Needless to say reinforcements are called for here.
I inserted a thick massive aluminium bar into the slot in the handle (fit is so tight it had to be
hammered into position !!), secured it with robust bolts going all the way through the handle so nuts could be fastened and tightened at the other side; then put a quick-release Sachtler plate for their video heads on the bar and keep that in place with three 3/8" screws. Now, the lens behaves properly on a suitable tripod