I designed this stiffener for the tripod of the Trackit since it has no hard-endpoint and therefore tends to fold to the middle when moving the tracker around.
https://www.printables.com/model/1419214-revopoint-trackit-tripod-stiffener-to-prevent-unwa
It gets easily fixed with sturdy zip-ties but takes some rigid filament to perform well.
Also have a look at my other designs on printables.