Wow that is a nice find. Brought back some 10-man memories when I read this.
In 1996, Hyperball brand pipe concept fields made their US debut with a single Hyperball field. The following year, Adrenaline unveiled Sup'Air with a single field. In the years since the NPPL has progressed from wooded fields, to concept fields only. 2002 marked the first year since the Hyperball debut that the Paintball World Cup used only inflatable bunkers with no corrugated pipe fields.
I played on that hyperball field in Orlando at the World Cup with Venom of Maryland. Oh the good old days. I may be down for this event.