It's time to mount the fuel tanks

I've started to mount the fuel tanks in my project. It is a plans
built wooden aircraft.
The plans called for retractable gear that I decided I didn't want on
my first plane, so
instead Ive made fuel tanks to go in this area of the wing. I have
been making brackets
when a freind said that his understanding was that the tanks had to be
held in by straps
not brackets. Would anyone like to share their knowledge?
Lou