Hey man, a couple things1. Just a heads up. I didn't remove or raise my console when I removed/installed my new tank. There was enough room for me to get everything in as is.2. I didnt replace my vent hose, nor would I suggest it, unless its damaged. Mine is 36yrs old and looked great. (hell its just a vent a hose anyway) I say leave the vent hose as is.3. As for securing the tank. I used a hybrid method of the Pascoe method. Here's what I did. I encapsulated a piece of plywood with fiberglass and tabbed it into the stringers(to use as a platform) Next, I 5200'ed neoprene strips (lengthwise) to the bottom of the tank to keep it off the plywood. I also 5200'ed strips to the Vertical front and back of the tank(near the bottom), and also on the top of the tank(for the straps).Then, I dry fitted the tank. I Screwed & 5200'ed Galvanized angle brackets http://www.usatrailerpartscentral.com/S ... -1333.aspx to the plywood platform at the front on back of tank(where the neoprene strips were previously installed) to keep the tank from sliding bow/stern. I also strapped the tank in from the top(using original straps) over the previous installed 5200ed neoprene strips. My thinking is the 5200'ed neoprene stripes on the bottom, sides and top of the tank will be completely waterproof, sealed and protected from the elements. They will also let the tank breathe / dry if were to get wet.Does that make sense if not let me know.