I use a triple stand and hang a D35 Martin.a Maya mastertone copy 5 string banjo and a Docherty mandolin on.I modified with a leather covered cardboard box th hold a set of whistles They all set there quite happy until needed,and the fact that the backrest is way below
the mandolin doesnt affect it,nor the weight of the banjo.But I do have Pub Props as well for informal sessions.