So I can't leave well enough alone, and I have a 6 foot (and then some) 4x4 I ended up not using. I decided to sacrifice it to make an anchor for the new tower. I dug a 35-36 (hit a rock at the bottom, called it close enough) inch hole next to the farthest 4x4 on the new tower. I wallered it out a bit at the bottom, and I'm going to pour concrete in there around it. Before I put the 4x4 in, I'm going to screw 5 or 6 screws into each side, leaving 3 inches sticking on each one, covering about the last foot. That way it'll have more to grab the concrete. I'll put 3 carriage bolts into that 4x4 post for the tower, and I'm hoping it'll be good...lol. Pics:




This 4x4 is about 3 inches over 6 feet. That 2x4 connected to the post is about 8 inches in the ground. It helped, but I hope this will do better.