I have coached mum jenny before and she wanted to return with her 7yr old Marcus before their alps holidays. He really wanted to be able to in his words lift either wheel off the floor and get better at berms. 1st I adjusted set ups and corrected  body positioning before anything could or would work. Both mum and Marcus were surprised at how quickly he could perform the unweight of the either wheel. We worked on berms and linking them together as well as drops too!