As Roy mentioned, the TC30 has no sub-frame mount for the loader. I'm not sure about your Rhino loader, but the New Holland 7308 loader doesn't use a sub-frame. That just means you will have to be careful not to slam the loader into things or lift with one side so the tractor is twisted. I also do not recommend trying to handle round bales with your loader. I'd use a 3PH bale spear on the rear instead of trying to lift with the loader. You may get the bale into the air, but if you hit a pot hole or rock while traveling, the dynamic loads will really put a heavy shock on the tractor and loader. The ideal situation is to have a tractor with a sub-frame and a skid steer quick attach adapter. No sub-frame and a bucket spear is just really asking for trouble on a TC30 in my opinion. You might get away with it for years, but one time is all it takes to be a very costly mistake. Big tractors or CUTs with sub-frames are needed for the safest round bale handling with the FEL.
Jim
You say that the TC-30 does not have a sub frame for the 7308 loader.
I know that my TC-29DA is totally different from the TC-30 but is my 7308 loader mounted differently than it would be on a TC-30? Is it a stronger mount?