Been thinking about the same issue myself for my Alligrator.
I have not yet competed but I see lots of postswhere people talk about uneven floors and also debris accumulation.

I was thinking about a castor mounted in such a way as so I could adjust the rake front to back, and control the height of the front edge.

On my beetle I am using a HDPE skid fashioned and two drive wheels, its not a wedge but the principal is the same. This approach could be a variation on option 1/2 as it runs on the floor but could lift the tip up a bit so it would get over small ridges. It would wear down but a bit of HDPE is easily replaced.