Anyone have experience with SoarNV?

Nick, there are a lot of egotiscal pilots out there too that do not have the aviation talents in their hands that in their mind they think they do.
They cannot fly a stable tow, box the wake or keep the yaw string where it belongs. Flying in the back while the nose hunts back and forth due to adverse yaw every time they twitch the stick gets nauseating.

If you can show up at a flight school, complete two or three polish flights and pass to PTS requirements good on ya.
We've had rated pilots show up that could not fly to PTS level and wonder why we would not let them fly our equipment as solo PIC.

It's not the ego of the instructor to "do it my way". It's what are the skills required in the Practical Test Standard.
Can you plan and complete a no spoiler approach or land on tow? Yes those maneuvers are in the PTS and could be requested by the DPE.

BillT