Honestly, for the DIY person, the BRP info list specs for toe in regards to ride height.
That info along with this calculator can be used if you have the desire to align at home. Overall though, getting it done by those that have the tools and are familiar with the settings may be easier for most people.
The interesting part is that on newer vehicles, BRP is concerned about the rider weight in how it effects toe in or more correctly, bump steer.
To use this calculator for a three wheeled vehicle, simply combine the left and right rear wheels into one, and take the dimension shown. As with all Spyder alignments, the rear wheel must be positioned first to have the belt track properly.
https://robrobinette.com/DIYAlignmentCalculator.htm
PK