i had the same problem with my hatch that i had when the twins were small- i had to undo the straps each time i had to get the pram in and out and then do it back up again- a PITA by doeable
had no choice at the time as i had to use a twin pram!
but then again i used to fit a twin jogger pram in and out of the back of a barina hatch lol!
things we do!
HTH