gotta have 4 wheels - its in the event rulebook (seriously), basically any wheeze you can think of to get you over the pooh is banned, double wheels, tracks, etc etc, Frogs are just exploiting a loophole that was intended to keep people racing instead of knocking them out, IMO not in the "spirit of the event" but sadly there are those that value a plastic cup over all else...
The tree didnt save 3 or 4 this year Tony, it looks like an obvious mistake from where the camera is but from a drivers point of view you can't see it coming.. 3 years ago I had Urvo and the red niva tapping the bumper when we went through there, Petal had a view malfunction (and I chewed a hole in the seat cover) thankfully saved by nailing the gas and using the tree, its a fair way down to that lake