Ah yeah i see what you mean. That would also make me uncomfortable. Also if there was any gusty wind.For an inspection or oil change OK I guess. I wouldn't start putting any force to the body in that state. Hammering pulling ect... It's not a Ford fiesta. There's some weight to them.
All ill be doing from now on is using an angle grinder and power file, welding and painting. There is very little wind and ill try to rememeber not to use the chassis to pull myself around under there
The ground is very solid, think it might have been paved many years ago. Zero noticeable sinkage overnight. Might be different if it were sodden but weve had glorious weather for weeksPersonally I'd work under that it's on its 4 wheels just stick some chocks on either side of wheel. Preferably stick a bit of ply under each bottom block (bit late now) so it doesn't sink in
I'll chock each wheel and stick the axle stands under as well, I'm sure they wont be needed but might me buy a but of time if it did go south