Thanks for your replies.
@padlin, the trailer i need to move will be a 5.0 Single Axle/Classic/Old Skool
@Alf, i did not know the axles got adjusted according to hitch height, hmm, i don't have a TV yet and since 5th wheels are not all too common overhere there's no easy way to measuring orasking someone.
I'm hoping normally hitch height will be more or less equal on most vehicles or that there will be somesort of "ballpark" regarding the trailer versus hitch height.
@brian, thanks for pointing that thread out to me it has some usefull info.
It seems most solutions have somesort of dolly under the kingpin since the jacks are considered not fit for lateral movement.
It seems i need to polish up the trusty welding torch.
Seef and Yvonne