I've only shot two toms (started last season), but both were called uphill, and I was literally invisible.
I'm thinking if you use the right call, it won't much matter, although that little patch of trees may be a suspicious-looking area to an old gobbler.
Get up on the hill (given there's toms in the area). They can hear you half a mile away. Take a slate and a ten-dollar push button yelper, and use 'em both at the same time-then get ready to melt turkey head.
