Well, a couple hours to the west of PKI is Holiday World, a great little park with two awesome woodies in the Legend and the Raven (IMHO, both are better than any ride at either PKI or SFO, although I have not been on SOB). HW is cheaper than SFO, with free parking, free soft drinks all day, and has the friendliest employees you'll ever see. Shivering Timbers is great, but other than that, I found MA a little lacking - and it is WAY out of the way.
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Age and treachery will always overcome youth and skill.