You don't need help with thermals. You just need someone to say you're correct. Your scent will go up hill in the morning and down hill in the evenings. My honey hole is a creek bottom. I'm set up down wind of the most prominant crossing. Another good spot to scout is where the creek bottom and the field meet. I'd scout around along the wooded fringes to fine the best spot. The field should keep the deer in the woods and bottle neck them where they can pass around the end of the field. If this lines up with the brook even better.

Are the banks of the creek steep? Any place that offers easy crossing(unless it's all easy crossing) is good. I found a place up north a couple of weeks ago. There was a good sized brook that had very steep banks in most places 30 feet tall. I walk the creek for about 1/2 a mile and found 1 spot that offered a gentle slope and an easy crossing and right dead smack in the middle of this slope was a "cow path". I'm wiling to bet that 90% of the animal that cross the brook within a half mile of this crossing cross at the crosing.