Bottoming out on ramps?

[flamefixed]

Apparently ramps are going to be very common this year. With this said, what are your ideas on how to prevent your alliance robot from catching their chassis on the corner of the ramp (the transition from sloping ramp to platform parallel to the ground). Our robot may have a simple middle wheel on each side raised sightly above the drive wheels which will work on any degree ramp (as long as the front wheel can get to it). Though, not all teams may incorporate something to get similar results. I was thinking a roller at the transition, but this isnt as simple as one can say. So your ideas??

Thanks....
Steve