It can be a challenge, but we have a great guide here:
https://www.facebook.com/groups/ChaparralVortexBoatOwners/posts/2371186919853713
Note that not every model year of the boats are the same, this covers the vast majority, but the early model years were slightly different, and the newer Power Folding towers also used a different type Bimini.
Additionally, many people find it easier to just remove the canvas when trailering or when the Bimini is not needed. You simply remove the tension poles from the mounts on the rear of the Bimini, fold up the rear section to loosen the tension, and zip it off. Re-attach the poles, and you are done.