dang it gizmo , Id just that idea out of my head. hint , avoid short wheelbase trikes, they hurt when they stack, you dont even need to hit anything

. it is so tempting to cobble something together, but a friend has a small fleet of recumbentswhich are really nice to ride, but when you see him in traffic, you just think about which particular make and model of car he will be run over by.
appaerntly there is a height limit on warning flags, poles etc that you can fix to a bicycle in WA , I will try to find out more