I like the ſ, it eſpecially has the advantage of being eaſier to write in ſome ſcripts (textura) when the long ſ is uſed it is normally the defaulf ſ, with the ſhort ſ being uſed at the end of words. All other rules ſhould be viewed as exceptions to this rule. That is, the rules are when to uſe the ſhort ſ. Theſe exceptions ſeem to be based on typographical concerns and vary by typeface/ſcript and language.
The Babelstone article is mainly for printing, and points out 18th century handwriting uſes only the ſ as part of a ſs.
To make it ſimple, I juſt uſe the s at the end of words and in combination with f. All of the other rules mentioned in that article vary, and probably for typographic reasons, or deal with rare situations.