One of the most passionate DIY'ers tackling the Steadicam Merlin design and Gimbal handle with full rotation that I know about is WSCLATER. If you check out his website over at https://www.diycamera.com/stabiliser, you'll find years of logs refining a single Steadicam project. Yeah I think I would have given up by then. There's seems to be a very similar version showing up on eBay called the 'Steadicam Gizmo'. Personally there's some things I would clean up to finish up the little detail work, but looks really close to what WSCLATER has been working on. Four items sold just today for this Steadicam Gizmo, and parts can be purchased seperately. If you're not the DIY type, you might to check out the handle which uses the same design as wsclater, which might be a good improvement for that IndieHardware stabilizer as an upgrade. Check out the Steadicam Gizmo DIY stabilizer found on eBay auctions.