Nugget, I'll take a stab at giving some directions...I'm guessing on some of the mileage. Obviously there are several different routes, but I'll try and give one standard and hopefully easy one to follow.
Traveling on I-24...if coming from Nashville take exit 11 (several Hotels on this exit) and turn left off the ramp heading toward Clarksville(if from Kentucky, obviously take a right off ramp). Go approximately 2 to 3 miles and you'll come to a large intersection. Turn left onto HWY 41-A (after the turn Walmart will be on your left, K-Mart on your right). Travel 7 to 10 miles (heading toward Nashville) and be on the lookout for the 2nd water tower on the right which sets a good ways off the highway in a field (the first watertower sets near the highway on the right a mile or so from the intersection and if memory serves me correctly there are no other water towers during this route). At the end of the field the 2nd water tower is in, Oak Plains road will be to your right and will display signs to the Twin Oaks Archery Club(I think the water tower has "East Montgomery Utility..." written on it). There will also be a sign there to Smith's Auto Salvage which is across the road from the club entrance. Follow these signs 3 to 4 miles after turning on Oak Plains road until you reach the club. Hopefully you won't end up at Justins doorstep in Utah following these directions...good luck!