Got mine yesterday with the spare canister, hooked it up, and scared the hell out of the dog. It worked awesome and was firm for about 15 minutes, it then started slowly losing air. I suppose with snow on it, it may lose air earlier and a little quicker. I would expect this to be completely normal and actually what you want to happen. If I am buried, I want to be supplied with some air. I realize this is not the primary intention of the bag, but definitely a secondary plus.
I was surprised the bag was yellow and not orange. I would think that orange would stand out more on the snow. I also found the trigger to be a little short and really had to force it to come out of the trigger cover so that I could screw it onto the trigger. Getting the quick connect on is not easy either, you have to work it to get it to close the connection. Push the two together really hard.
The pack has a ton of room, but only slightly more than my Dakine Heli-Pro, however it is a lot bigger than my Heli-Pro. I will be riding with it this weekend so we will see how it goes. If I had it last weekend it would have been deployed just after watching the snow crack as my ski hit it and the thought run through my head that I just ordered the thing and now I need it, NOW. Throttle NOW, it is only a small hill, but you need to move NOW. Luckily only a small slab let loose, but I was none to happy. I made my hubby ride the new sled out and I took my loving mod sled that did not fail me. We went up up and away from that stuff, busting through some deep drifts. I just wanted out.
Thanx again SnowBigDeal.
Oh ya, I forgot to mention, make sure you have gloves on when you pull it. It takes a little bit of force and the cable is thin and can cut your finger.