24r is more than capable of completing an Adult event, we have done so many times with my son riding. If out for fun then they are very capable and easy to ride, suspension works very well. Some minor modifications and very competitive bike apart from available tyres. We get around 12 miles from our battery so more than enough for any trial. They don't ride like a petrol bike but with some practice are very capable, easy to maintain and as you state light as well. They have proved how good they are in youth trials, the only limiting factor is the tyre - we have a petrol bike as well which has more grip but both offer a lot of fun. With regards to doubling up on sections that is normally to assist the Dad chasing their child and time constraints! I do it every event and the Oset will compete on any adult event we have come across