Pick it like any other lock, there are no tips or tricks I can give ya for that specific type... just find a good way to tension it comfortably, making a wrench for it if necessary, and get picking. It's only a master lock.
As for picks, there is no pick that works best on x lock. Doesn't work like that, it's all about what you're comfortable with. If it maneuver easily in the lock, use it. Start off with a short hook and if it doesn't have enough reach for certain pins, use something longer. Same goes for any lock. Just keep practicing and you'll get it.
