So, as to not get crazy or anything, I've decided a 30-40ft tower would be more than ample, given my plot. So, I'm debating right now.

My old QTH, the landlord/neighbor (Who is a ham) had an TV antenna tower basically weighed down with cinder brick, and attached to the garage for support. I hazard it's a 25 footer. Can't seen any issue with that way, it worked well there for a number of years. I could go with that, and it would be relatively inexpensive to do, and it would work well enough.

But, I got to looking at US Towers, and I like the idea of a crank up tower. But, I would need a proper foundation for it. For a 30-40ft antenna, what size foundation am I looking at?