Doug you are fortunate to be in Ashtabula and only have to go 11 miles to get to 72 feet. It is a further ride to 72 feet from Cleveland but it is not 20 miles. You can’t go by the Lake Erie chart. My guess it is in the neighborhood of 15 to 16 miles out of Edgewater to get to 72 feet. I’m sure you pick the right days to do it but I commend you on going to where the fish are. Hopefully you have all your safety equipment in place in case there’s a problem. Good luck.