We have the Condor with the small plate mount in ours. Mainly so we can get the chock out of the way if we hang out in the garage or use it as a spare bedroom.
I got the blocking tip from another forum. On mine, the block actually supports the frame, not the engine (I would personally be leary of putting that sort of force on the crankcase). Cinching the bike down against the block (tie-downs to the frame not the handlebars) makes it as solid as can be - pretty much part of the trailer. No ill effects on the floor as the center of the block is centered on top of one of the floor joists. The base of my "block" is 3/4" plywood that is about 10x20 or so, which spreads the load out.
This setup recently traveled Alaska and Canada over hundreds of miles of real some rough roads. The bike was always right where I put it and the garage floor is as flat as it ever was. The windshield did get jarred loose once, but didn't fly completely off.
Congrats on the new trailer!