With a bit of wind blowing up the hill, you should be good with 8 to 10 knots if its a good hill. Don't turn back into the hill on your turns and don't have a lot of crap below you like trees and buildings. They will screw up the lift. With the right conditions, you will have a blast. I love slopin. Long bent wings in very light winds are fun, long flat wings with more wind are a blast too!