+1 on the Harbor Freight chocks.
We mounted two on our trailer & took my husband's Ultra & my RKC to south Florida from Charlotte & back.
For once a good deal really turned out to be a good deal.

 

They look pretty sturdy. Good price to.

 

Got my Haulmaster model from HF for 19.95 on sale a few months ago,,works like a champ. Where I got my trailer had the exact same one,,,only 159.00..oh those greedy dogs....

 

Got this HF one today. But you do gots to bolt er down. Wanted to try it out before bolting it in the trailer. Just scooted over the floor. So..........put a long 2 by 4 across the garage door opening and pulled right on real slick like. Stood up real proud and pretty sturdy. THEN, tried to back it off, that wasn't happening. Had to tie a rope to the stand and to the trailer hitch on the truck. That got 'er done. Life is a ball.