Actually keeping it in your crotch or even your pocket wouldn't be a bad thing. After about an hour to an hour and 30 minutes of just being crotched the temp hits right around 96 degress. So really keeping it on you the whole time would be a good thing - you'd be ready to test at a moment's notice. The hard part for me would be wearing the tighty whities until the test.....but that's because I've been a boxer man for over 25 years. Go get the Quick Fix - it'll save you a huge headache and a lot of worrying. Just practice a few times to see where the temp ends up keeping it in your pocket, then do some more testing to see where it ends up being crotched, and then practice carrying it in your crotch, pocket, or where ever you plan on carrying it without being detected. After that it's really all about getting the sample in the cup while its still between 90 and 100 degress. I found that acting ignorant to what was happening made me look as if I had no idea that there was even a way to beat the test....I played a part if you will. But I'll go into that more when I post my final results and my step by step and play by play. Subbing is MUCH easier than I thought it could ever be