They should have to balance the wheel out in all types of weather, good or bad. If the wheel's not balanced, the speed will fluctuate and will cause bad things to happen (burn out motors, unpleasant rides, etc.).
Regarding the Boblo rumor, I think it's possible to fix the gondolas so they can't rotate, so it's still possible that it's the same wheel.
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Scott W. Short
sshort@mediaone.net
http://welcome.to/midwestcoastercentral