I had two uncles that raised bees, my one uncle was a fanatic about them, he was pushing 15-16 hives when he got sick and had to let them go. He always had two supers on all his hives, left the bottom one for the bees, only harvested the top one. He planted special flowers all around and also planted a certain tree some feet in front of the hives so if the decided to swarm, they would go right to the tree and he could re-collect them in a new hive.
As for the plowing, looks like you were doing a good job. Took me a few tries to get my Sears set up correctly and me learning how to do it.
Here are a few pics of the factory hitch stop that could be ordered. Second set of pics are from an MTF member who made his own.
Home made one