jag-mag, yes, I can hold full draw for that long with a 75-80% letoff compound. No trick. In fact, I went 12 minutes at full draw once (McPherson SoloLite, 80% letoff, 70 pounds draw, Scott Mongoose release) just to see how long I could hold it. Could have held a lot longer but it got flat boring and besides, there was this grasshopper crawling up the target face....