What are the options available for flying/mounting the VFR129i?

The VFR129i can also be mounted using a U-Bracket (drawing below) or by using eyebolts in any of the available mounting points on the cabinet.

https://eaw.com/wp-content/uploads/2021/01/UBKT-V12U_DRW2D_revA.pdf

For any other configuration, or flying both boxes from a single point, a custom solution is required. Adaptive Technologies or Polar Focus would be the best bet, they both have done a lot of work with EAW products.