The KBF corkscrew was not really all that short lived, 1975 through 1989. 15 years is a good lifespan for a small steel coaster. Maybe the corkscrew design was overshadowed and had low capacity, but look at the replacement. Another low capacity run-of-the-mill small looper. Odd.
As for the Soap Box / Windjammer decision, THAT defies ANY rational explanation whatsoever. I hope Knott's has learned from past mistakes. Then again, now being a CF park, things look good.
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"X" marks the spot in 2001!