6'1" and having problem getting behind someone? who do you practice with, shaq o'neal?
I have the opposite problem. I am short and most of my partners, tall; thus, it would take a bit of foot work to get behind them. however, I have tried this approach, it might work for you.
walk straight into the uchi, don't try to go around it, and at the last moment, swivel your hip. see if you get to the point that the shomen uchi brushed by your nose. also, you can also try to cut horizontally with your leading hand, sort of trying to cut your uke head off at the neck with your hand blade. don't cut down, either horizontally or up.