The door sill pieces don't slide when snapped down. It's better to have a body trim tool, especially with a rover. Just pop them up carefully to give yourself access. On thing to watch out for is losing the metal clips from the top piece. I have lost one several times. A small magnetic fish helps fish them out when you pop it up, don't panic.
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I don't think 30 minutes is realistic, but you will be happy when you are finished.
http://trim-pad-remover-816.korotkevich.biz/
I don't think 30 minutes is realistic, but you will be happy when you are finished.