My wife and I have been pushing him for two years. (Probably too hard)
After reading on this very sight last week I removed his training wheels and PEDALS.
The big difference is that he enjoyed rolling as far as he could.
Riding on training wheels is kind of scary.
Anyway last evening i put the pedals back on and he rode the length of our driveway a half dozen times!
We were all three so excited. He made us send Mimi a video. Now his scout leader has found out and he gets a bead at the next pack meeting.
On a side note the two year old is scooting away on his Raleigh push.
I don't think he will ever need "training" wheels.