Legal or not?
If Your Load sheet reflects reality to the best of Your knowledge you are good to go.
I can not think of anyone serving hard time for faking a loadsheet.
The gross errors in weight and trim is on top of my list.
Murphy , Newton and Darwin takes care of those that dont.
Flying a 737 that is not particularly sensitive to either weight or balance helps.
A Beech 100 with 10 offshoreworkers with 20 kilo carry-on bags now that was a bit of a balance to say the least out of a 900 meter strip.
Then again we only had 3 of them and 2 Beech 200 so the concept of fleetweight was rather unknown.
I do recall one ambitious pilot suggesting we weigh the Pax before each trip.
He had a short meeting with the Ops Manager, Old Cpt A, and that problem was no more.
Oh , and I always used to carry a spare loadsheet and a deice form.
Must remember to pick one up.
Happy Rotation
Cpt B