Congrats on passing the course.....
Now its time to practice, practice, practice... Larry is right....the trick to making a sharpe u-turn is snapping your head in the direction of the turn. Go to an empty parking lot and use the parking space lines to practice turning. Start with 4 or 5, whatever is comfortable to do, and you can just enter from one side and stay within the lines and complete the u-turn as soon as you can. Do it over and over and do it both ways so you can practice left and right u-turns. Keep trying to get the turn completed in less space each time. The best you can do is 1 and 1/2 spaces as the turning radius for the Ultra is 15'4" if I remember correctly.
As for dropping the bike..... IT WILL HAPPEN... There are tricks to picking up the bike by yourself and as long as you use your legs and not your back it really isn't that hard. In most cases, someone will see what happened and be glad to help. If you have to do it yourself then snuggle up to the bike with your knees bent on the side the bike fell on. Grab the hand grip with one hand and the saddlebag crash bar with the other and drive it up with your legs. If the bike has fallen on the right side make sure you put the kickstand down before lifting just in case it goes too far over when you lift it. Picking it up once is hard but twice sucks
Just remember one thing------ its takes almost NO SKILL to ride down the interstate at high speeds. All the skills are required for the slow speed stuff.