Just to re-itterarate, there are two reasons I can't use a single pair of Base Stations for two vives in my availible play area.
1) My total play area is about 11x24 with a 4' wide x 4' tall x 9' long retail display table in the middle. Putting the 2 lighthouse sensors on oposite corners of this play area would exceeds the maximum recomended separation distance of 15' by almost double.
2) Because of the Retail displays 4' height, any controller (or headset) actions below this level when the player has their back to the lighthouse sensor in their area would not be seen by the lighthouse sensor on the oposing corner causing tracking issues as well.
I've already sacrificed 3 display tables and drastically re-aragned my store to make this much play area. There is no other way I can re-arange to make one big play area without sacrificing even more of my retail display space. As it stands this is occupying about 1/4 my total retail square footage, re-aranging would make that number even bigger. At $2.50 a sq/ft just having this much play space is technically costing me $550/mo.
I will just try the hospital curtain with 4 lighthouse sensors and hope that works, if not I think my dream of having 2 Vive's with monthly competitions to demo VR and help sell gaming computers with HTC Vive's is dead.