I want to be able to wear belts on trousers that don't have belt hoops on around the waistband. The problem is that, without beltloops to secure the belt in place, the belt can ride up towards my ribcage. I know I could make permanent belthoops for the trousers but prefer not to do this (too much faff; want to retain the option of belt-less wearing etc).
Does anyone have any neat tricks for keeping belts in place when there are no beltloops on the trousers to secure it?