I will say that adding your raspberries to the secondary by wrapping the grain bag around the carboy neck and stuffing the berries inside with a funnel works great.
But, be sure to rack the beer normally into the secondary with little oxygen exposure, not on top of the raspberries. Mine still has a maturing raspberry flavor and I only have 2 bottles left. Don't want this batch to be gone.
This recipe highlights the raspberries. Frozen works fine also. Definitely will make again.
Good point...if you add the raspberries after the carboy is full, you won't be splashing your beer everywhere....then again it might be difficult to accurately gauge how much space is needed for them?
It's the bit about siphoning over the suspended berries I don't agree with.