Are they really good? I was using a rigged way of holding my air temp probe thermometer with those black binder clip type things but then I read about using a potato and Jeff saying they're great to eat as well. Anyone know if they would be done in 2-3 hours if I'm smoking around 225-270? (going to do a tri-tip and temp might be running high). I read in another potato thread about pre-nuking them to get them started. If it helps, the potatoes are each 3/4 pounds (good sized russets)