You know, none of you can really answer this question. The question is if loops ruin wooden coasters. There are no loops on wooden coasters, just one loop on one. ;)
But, I myself have never been on Sonny, but would ride it. I'm sure it would not be my favoritie coaster, but not my least favorite. The loop might ruin it for some people, redeem it for others, and everyone else, might be the greatest thing in the world.
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Everybodys got something to hide except for me and my monkey!