Randy,
I really like the looks of the Fulton F2 jacks, and am doing some research to see if I could possibly get one. The original steel jack on my trailer has it's paint badly chipped and is starting to rust in less than a year. I really like the wheel wedge lock and Aluminum construction.
However, I am a bit concerned about that jack. While it has good reviews on Amazon and eTrailer, the reviews on the Fulton site are all bad.
It has plastic wheels though it could possibly be replaced with more robust ones. It has only a 10" lift height where the original has 11", though the lift range can be optimized with the clever mounting height adjust-ability. It is also quite expensive compared to the steel ones, but could be worth it.
The weld-on mount is a pain, but can be dealt with, though the frame will have to be painted in the area of the welds, as well as the new plate, and the trailer information plate which is a DMV requirement is right there and will have to be protected from welding and paint. I think a better mounting alternative would be to get the
version of the jack with U-bolts that is designed for a 3" square tube. I would get a short length of 3" square tubing, about 6-inches long and nestle it in the bend of the trailer tongue L-channel. The jack U-bolts would hold it in place nicely, but if you are concerned, a couple of bolts could be added, through two of the original jack's mounting holes.
The F2 jack comes either with two 7" wheels or one wide 8", it is not clear to me which would be better; any thoughts?