Hi guys,
Both the LCVP and LCM had brackets for 'hoops' over the cargo compartment, but I don't recall any d-day photos of them being used in action. unless you know different...
A lot of cargo, men and material, was loaded by crane or nets over the side of the mother ships, so access needed to be unimpeded.
I have seen D-day preparation photos of larger craft, LCT's ect, with cargo deck hoops, rigged for camoflage covers. I will see what i can find in the way of photos
Jon UK