OK so I am new here, this is actually my first postand I had a queston. I have a 3 year old daughter and currently (not rightnow though since it's winter) she rides in a Topeak seat behind my wife. She is VERY close to 40lbs. and by the time we start riding again she probably will be. We are concerned that she is reaching a size that is too big for the seat and were wondering what is the best way to go. We are considering buying a trailer but of course being QUITE expensive we are hesitant to do this unless it is the right thing to do. I actually wish we had just broke down and bought one in the first place. So any suggestions on what is the best thing to do??. My daughter is not getting any smaller and I would hate to spend a million bucks on a trailer that he will be using for 6 months but I think she is not mature enough to ride on on one of thos pull behind bikes (not sure of the proper terminology).