DeVrieski
Yes, we surf without the rope and we move up and back on the wake. We're at about 9.5-10 mph and any extra guys I have on board sit on the trunk with their feet on the swim platform. Here is a video that will hopefully answer some of your questions. This was last season.
http://www.youtube.com/watch?v=XvU9nI_eRgg
Good Luck