I've seen 800x on RV-8s in the past. Seems to work well. You lose about 8 knots without wheel pants but who cares if the plan is to go into rough fields? The 800s are plenty big enough for most small, wet, soft fields. Not the same of course, as the big donuts you see on Mauls that are landing on sandy river beds. Not even sure how you would mount those on the low wing, but if you figure it out, you GOTTA post a photo here! HA.