Hey, one of the first places to look is in the Regional Forums for your area in Ohio here on NS. If there is a good trampoline facility in your area, the other kids from Ohio should know and be able to help you.
If you are interested in purchasing a trampoline, that is another option. There are many companies who sell trampolines online, but are often more expensive due to better quality and size, plus shipping as well.
However, local department stores may have lower end models of trampolines that will still get the job done. They may be cheaper, but lower quality and smaller. I heard Sam's Club may have some pretty good ones as well.
Last of all, always use the ADVANCED SEARCH SEARCHBAR in the upper, right-hand corner of your screen and look up whatever you are interested in. It has a lot of information about purchasing, maintaining, locating, etc, trampolines.
I hope this helps. GOOD LUCK!