They are not very forgiving at all...but very fun. My first stone at Boston was a 265 to a 69" platform. Was not fun. The heaviest was a 365. Have done a 400 before.
You really need a lot of technique and explosiveness from the bottom. Lots of people can cradle one...but shooting it up high, trying to hold on, lean back, and flip it up onto a tall platform...makes it hard.
B True