Hi Dan, I know you got that Wipika bar, so you need to set one of your stoppas about 5" from the bar so when you unhook your kite profile stays roughly the same. If your kite has too much back line tension your kite will flare and sit further back in the window( ala med aspect style) making it more difficult for you to stay upwind and keep your edge....Not impossible but thats where the technique comes in! I ride a wipika pulley bar and have a fair bit of tension on my back lines...still flying upwind and maximum pop when i need it.....Practice.... suggestion 2...Set that Wipika bar as a fixed line...good luck..PS. If I see you again at woodies i'll give you a shot on the pulley.

WEST SIDE MASSIVE, AIIIIGGGHHT.