Can someone explain this type of dual rigging to me?

[Curbstrap2]

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&Item=260492912147&Category=47293&_trkparms=algo%3DLVI%26its%3DI%26otn%3D2

[bruce johnson]

This is a dual rigging plate. This type of plate gives the rider some latitude in where the cinch hangs. The latigo can be strung on the front slot and run back through that to make it a "full double rigging". If you hang it on the back slot and then run everything through there, it may be a 3/4 rigging position. To add another twist - string it on the front, run it through the cinch and then back to the rear slot to hang the cinch between the two positions - making it a 7/8 position. Some folks like the split position because it makes a smaller lump under the leg.