Hey Danny,
Liking what you're doing with your tank.
If you want to move forward with the leather strap idea, maybe try using something along the lines of what I did with the leather straps on my earlier DECOLINER build. Bought the leather straps and 2-piece brass screw fittings from an eBay seller. You could probably incorporate a couple of buckles too for your application. Straps simply adhere to the tank with 3M double sided tape.
Liking what you're doing with your tank.
If you want to move forward with the leather strap idea, maybe try using something along the lines of what I did with the leather straps on my earlier DECOLINER build. Bought the leather straps and 2-piece brass screw fittings from an eBay seller. You could probably incorporate a couple of buckles too for your application. Straps simply adhere to the tank with 3M double sided tape.