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It's just not necessary. Between the Wave Surfing Tutorial and DCBot or the Dynamic Clustering Tutorial, there's plenty of info to help someone make such a bot. The tutorials aren't intended to provide base code for every possible combination - making exactly the bot you want is the interesting part. :-)

what was basicgfsurfer between then

Probably based upon Kawigi's GuessFactorTargeting Tutorial and Voidious' Wave_Surfing_Tutorial. At least, it sounds logical to me (not to mention the fact that it is explained on the BasicGFSurfer page)