I'm about to pick up (probably an Adams) trail-a-bike. My son is 6 (1st grade) and this is a great way for me to ride with him to school vs. driving. Also allows for longer day trips. (we also have a Chariot for the 2 smaller kids - 4 yrs and 2 yrs).
Question - are gears on a trail-a-bike worth the investment? Do they "get in the way"? I'm assuming the single speed model is a freewheel and allows him to coast on the pedals?