Scott, as for securing the tractor on the trailer, I use 3/8" chains. If there's no implement on the back I attach the rear chain to a clevis hook on the drawbar (do you have a drawbar? It was an extra "option" that I bought for the
B7100, but is usually standard equipment on most tractors I think). Front chain was always attached to the front end loader. With the
B2710, if the loader is not on the tractor, I run the chain through the front frame. However, some folks use the ratchet straps and I see no problem with that if you have strong enough straps and don't route them so they get cut.
As for dropping the loader; my
B7100's loader was not a quick attach, so I never removed it from the tractor anytime. With the
B2710 and a quick attach loader, I always remove it for mowing and tilling. There's really no problem either way, except that the loader out in front can occasionally be in the way of turning near obstacles, and it restricts your visibility a little bit; no big deal. It seems to me that the tractor rides a bit rougher when mowing on rough ground with the loader on because it tends to bounce up and down. Of course, if your rear mower is heavy enough, you might need the loader on the front for a counterweight to keep the front end from getting too light when you pick up the mower. And for tilling, is your Kubota tiller a counter-rotating tiller? If so you might want the weight on the front end to gain additional traction for pulling it. My tiller rotates forward, so if anything, it's trying to push the tractor forward and there's no need for any weight on the front end.
And after all that long winded answer, my suggestion (if you have a front end loader that can be easily removed) is to try it a little bit both ways and see which way is more convenient and comfortable for
you. The tractor ain't gonna care which way you do it./w3tcompact/icons/wink.gif
Bird