Well, you may go trought one patch only once, so try it. It's not hard. And, if I'm sure, Swampert made Sootopolis Gym map, but I don't know if from R/S or E. Maybe they are same, but I don't know though I didn't play R/S...
Go On This Page(My Website); http://thepokeplace.weebly.com/ and put in your email, I will email you the map for emerald:)
This link will tell you how to cross the 8th gym,
P.S. Also, it shows the awakening of Rayquaza. P.P.S I know that this was asked an year ago, but still...