I cannot believe that people are still suggesting that you cannot check the latches without getting on your back under the pod. Nonsense, you squat down, place one hand on the ground and lean over, it's not hard, just do it. It's well worth 10 seconds per engine to save your butt - regardless of what rules your company makes. You need to lie under the pod to open or close the latches, not check them.
As for doing walk-rounds whilst the aeroplane is still being worked on, that's another issue. Personally, that's the point I have to trust the re-fuelers, engineers etc to do their jobs, I simply don't have time to go out again.