Until I worked out the mechanics of landing (Spot and ship fully green on the radar) I was losing 1 or 2% per landing with the most lost in one go at 5%. About 3kLY out from the Bubble (after getting to A*) and heading back with the hull at 55% (after brushing a star or two.
Oddly though, I've started to have weird system issues in the last 5kLy. I was scooping a star with the temp at about 70% when it ditched me out of SC with an error/warning "Heat sink failure - Ejecting sink".
I have a heat sink launcher, but no ammo in it for the last 45k Ly.....
I'm sure the ship was playing up temperature wise for the next 3 jumps or so (as I got cooked by another star when just entering scoop range), though that might just be a coincidence...
2.5KlY later, seems ok....
K.