Me and Charlie went and met up with Johnnie and his kids at weekend, it did not go well. As predicted charlie managed a tiny bit of riding then decided he'd had enough and wanted to run/walk the rest of the way. Persuasion and coercion weren't working, he wouldn't get back on the bike, cajoling and out right piss taking equally elicited no more riding. Bribery with sweets managed to get him to "ride" to the next gate but that was it, after that he was chauffeured for the rest of the day (I'd taken the bike seat aswell) while his bike was stashed in Johnnies rucksack. Johnnies little 'uns did a cracking job, ripping along the trail, both managed to crash in the same spot in the same manner, one on the way out and the other the way back. A dip in the trail, carry speed down into it then try to get up the other side, not quite enough speed meant they didn't quite made it, started to roll backwards didn't manage to brake and crashed. Both were pretty cool about it and kept on going, good stuff lads. Nice afternoon out, walkers were pretty chilled, just need to get Charlie more interested in riding. Hopefully do another kids ride soon.
Oh and this may be the answer to my indecision, mmmmmm.