RE: flip 360 help plus boards
OK, the flip 360 or upwind 360. The amaount of flip you get will depend on how much you sink the tail for the second part of the maneuver.
The first part you have all the weight on your heels carving into the wind. Once the board is head to wind or has gone through the wind you put the rig forward and go back winded. The further you can get the board before you go back winded the easier it is. At this point you must change the angle of the board to the other side so the nose can slide. All your weight goes onto your toes especialy the toes of your back foot. As the nose slides round keep back winded and bring the mast towards the back of the board until you are dead downwind, then push the clew through the wind and open the sail. When you push the clew through the wind keep your weight back as there will be a lot of power. The biggest mistake people make is that they try to push the clew of the sail through the wind to early.
If you want to realy get into freestyle you will need a board around 100L. Obviously the best board will be the flares but the Kombat or large evo will do. It will depend on whether you want to learn wave sailing as well.
You can learn a lot of maneuvers and tricks on your Go. The more you can learn the easier it will be later when you change to a smaller board.
Just get out and play, maybe you can invent some new maneuvers.