Look for any edges/transitions in timber. Think through potential dry(ish) bedding locations and food sources/doe sources. Also think through water depth although I've seen deer swim deep areas of swamps like it was nothing on really cold mornings. Add all that data up to coming up with a plan A, B, C, D etc for possible deer travel routes. Hunt those sites based off wind.

That's all I know. My problem is I get the wind wrong cause it seems to swirl in swamp bottoms. So, I would add to make a reasonable attempt at scent control and not over hunting your best sites.

Also: buy hip waders and use a walking stick. You can't afford to fall and get wet on really cold mornings a long way from the truck.