My main objective was to focus on the "coverup" he is trying to get away with. To show that he had ample opportunity and time to get in touch with Laci before he went fishing. He messed up! One single call to their answering machine, leaving her a message he was going fishing, would have sufficed, ESPECIALLY if he knew she was dead, and wanted to set the stage for his alibi.
But he couldn't do that, because he probably only had his CELL phone, which would have disclosed his location. He even went so far as to say he left his cell phone in the truck while fishing.
Why would Scott wait until 9:30am to leave the house?...take that long to clean up and prepare plan or what?
Yes he did say that and said he tried calling Laci on his way home. BUT Lee Peterson said on the Greta show he talked to Scott WHILE scott was fishing.