Great suggestions. I see lots of use for a 3PH carrier, although in my case I'd like to keep both of the business ends of the tractor clear.
Two specific cases I'm trying to solve are when I have either the
chipper or logging winch on the 3PH, need to keep the loader available for shoving brush/trees or leveling the dirt/road, and I want to carry a chain saw, a few work chains, and maybe a pruning saw or clippers. This is what a typical brush clearing or tree removal adventure would look like. However things get mounted, they ideally wouldn't hang out beyond the current tractor extremeties so I don't get more tangled up than I do already.
I've been eying the ROPS bar and the two main stanchions for the loader frame, expecially the space between the stanchions and the tractor itself. I once tried attaching a length of 4" PV pipe to the stanchion but my mounting didn't work too well and I didn't pursue it further.
I might try the pipe thing again. I'm also thinking that a mini milk crate attached to the loader frame woudl be great for chains, rops, and other stuff. Then a pipe or two for thinks with handles like pruning saws, clippers, and even for a chain saw (slide the bar into the pipe).