Apparently, some people think every episode of this series has to be drama! Some forget that things can be fun also.
This episode is a pure romp. It's not intended to be serious, and those who are disappointed that it's not missed the whole point of the episode.
Moreover, a few of the statements made in previous reviews miss salient truths.
The character Captain Sligo built his home as a ship near his neighbor's home precisely because, as he told her, it was the only point of his property that was intersected by the West 100 degree longitude line. So, for the previous reviewer to claim it wasn't "exactly clear," is only explained because the reviewer failed to note it plainly stated in the episode's dialogue!
Moreover, the courtship was the central part of the fun. The banter between the old salt and the widowed mother was the fun of seeing two cantankerous characters butting heads and ending up with more affinity for each other each time.
The plot shows that even if the captain is a bit short on the lay of the land, he's a quick study, and not one to be trifled with. Armed with a stick that's encrusted with years of sea brine, he is quite adept at handling even a large group of cowboys, with his wits as well as his brawn, as proven in the climatic scenes with the drovers who tried to swindle him.
And, he's also adept at winning the hearts of two children, who do know how to plant corn, and as was made clear, perfectly willing to use that knowledge to help make the captain part of their family!
Ultimately, what we are left with is the message that if Marshal Matt Dillon was a sea captain, his name would have been Captain Aron Sligo!