Although it has never happened to me, I am somewhat worried about my door popping open and forever being sprung.
Also with a slightly polished exterior I did not want to do anything external that would take away from the look.
I decided to put an eye bolt through the floor plywood under the sink. From there I put a bungie cord that attaches to the screen door handle, which is quite sturdy.
The idea is this. You close the door most of the way and connect the bungie on your weigh out. The bungie holds the door pretty much closed without too much pressure, but enough so that if the latch works itself open the door won't be flapping in the wind.
Seems like it should work to me. If it won't don't tell me cause I want to feel
like it will