I'm still on the learning curve too but we'll all be experts soon. The challenge for me is smooth, slow cruising without porpoising and rock steady hovering. I find it's a much nicer flier if you reduce the extra weight in the ballast bags as much as possible. I don't fill the blimp completely with helium. While filling, once it's lifting all the attachments and payload, I top it up with blown air from a vacuum outlet. This keeps the ballast weight to a minimum. Haven't tried dropping anything yet. I understand one t-shirt at a time is the limit for this size blimp. You might want to try putting a helium filled balloon inside the t-shirt to reduce the load...maybe it would allow multiple drops per mission.