I have had a JP Zagi SI built for a while now, it's ok, but due to lack of suitable sites it doesn't see much use. So this evening, I strapped a Thunder Tiger GP07 to the nose. With a mini tank behind it, I set it to full throttle on the ground (I might pop to the model shop tomorrow and get a micro servo to control that) and threw it high and hard - it flies! I got about 3 min flight time out of it, and although it was hopelessly underpowered, it still gained height and in this 25mph wind we've got, was a hoot!
I can't wait to sort out the COG so it's less nose heavy (bit of handful to manage at the moment) and give it a proper flight!