I used to hold it until I came out of the woods and got back to my truck. Here is what changed my mind. About 5 years ago Southern Illinois got some snow during deer season, I walked into my stand that morning and hunted all morning. On my way out I couldn't last any longer so about half way out I stopped and peed. The next morning going in there were deer tracks and you could see where they peed everywhere. So, I don't buy the "don't pee where you hunt" rule. Of course had it not been for all of the snow I'd probably still be thinking the old way.