The rides aren't removed, per say, just stripped down to the barest structure. In the long run, it really saves time and maintenance rather than leaving them out in the Lake Erie/Northern Ohio winter to get totally filthy and possibly damaged.
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PO!NT OF VIEW - A Different Look at Roller Coasters
http://www.crosswinds.net/~justmayntz/thrills/ ** Updated April 4, 2001 **