Advice for buying a boat

[addicted2fishin]

So I'm still on the quest to find the right boat. Any tips or pointers of what to do and look for when looking at boats? There are too many stories of people being screwed over with hidden problems and you doing always have a chance to run the boat on a lake. I won't buy one without at least being able to hook it up to water and running it
Tips greatly appreciated. .
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