Personally i think the Try-All freewheels are definitely the best to ride with. Quite a few people say that they break easily and its true that they arn't as strong as some other freewheels. But mine has always ridden perfectly. It depends a bit on the way you ride also.
I had always had a two bolt booster when riding with a rear magura. It always worked perfectly and i never had any problems with it + lighter than 4 bolts.
Try and do a little endo, and then as your back starts to fall back down, try and quickly force your bike down and roll on to your back wheel, pulling really hard on the bars and leaning back. Keep trying!