I've been hunting for about 30 years and it's the only reason I have to look forward to fall, knowing that cold michigan winter is coming, went up north 2 weeks ago and made sure my tree stands and steps were in good condition, bow hunting starts oct 1st here while the weather is still good, I've hunted more then once in a t-shirt, here's the site I use on my bow.
http://www.eotech-inc.com/arch_hwsmodels.php