@arasbm, this would be worth it for sure. You can find lots of time lapses of this stuff online and without the gimbal things get pretty shaky. The payload will rotate relative to the balloon and coil up the tether as well, and then unwind as it comes down. Its actually really interesting when you look at the path on a map, everything after the balloon pops is just an inverted version of the path before it pops (but the second part of the path is much shorter because it comes down a lot faster than it goes up). That book I left at the space has some great pictures of this. Either way, a gimbal will improve the footage by A LOT.