I'm sure this topic has been coved but I can't figure out the search option on here!!
sooooo-- what is the best weight wise? I have no idea!
Not 100% sure I understand this post, but it sounds like you are looking for a New or
replacement hitch jack, with a wheel, which would enable you to actually push the trailer if need be?
There is a place in Mississauga Ont that sells New tongue jacks (2500 lbs capacity) which is more than sufficient, and they sell them for about $20 CDN, the wheel would be extra.
See below, as I am going to pick one up from them this week.
I hope that helps?
Follow the link below and look at Part# 78-R2000AFT