Wow De!
Those things would make you a real long lasting rock garden or boundary fence outlines or anything else you can think of to do with them. That is really cool. Just glad for your sake you had that Tractor to pull it out with.
I will be in market for a lawn tractor next year. Just getting to be too much on me to use my Honda 190cc self propelled and the Toro with the same engine size. Both are over 6 HP for a walk behind that is pretty good.
John Deere is my first choice followed by Cub Cadet. I believe I would prefer something that had a LOW seat that you don;t sit so high on kinda like the ZERO Turn mowers.
I hate being up high on those lawn tractors. Hurts my lower back.