I've never been tested, but I can do all of the skills at level 4 and most
of the skills at level 5.
My major stumbling block in the level 5 transition is either of the 2
skills requiring your feet on the wheel. I've started working on both of
them and I'd have to put my vote in for wheel walking as being the easier
of the 2 skills. Without even trying to get on and off my seat, just
trying to hop on the wheel seems like it will take forever.
I've only just started working on these skills and I may change my opinion
as I work on them some more, but at this time I think wheel walking should
be the level 5 skill and hopping should be level 6.
Doug