Other mistake: Someone shoots in the dark at the trio in front of the sandal king's house. Former Navy Seal Magnum must have read the script and know that the assailant was only gonna shoot once, because he jumps up from his sitting position and just stands there looking pensive at the bushes like a complete fool, taking no cover, nor trying to protect his client while the wife is dead. (00:33:20)
Other mistake: Mrs. Greeley mentions the sandal king's wife putting the hooks on the quarterback "yesterday at the party." That would mean that every previous event - Magnum showing up to the first day of practice, going back to the estate where Higgins annoys him, being 'hired' to practise with the team - all happens in a day. TC actually mentions the practice "the other day" which contradicts it explicitly, but even without that, all of it is patently absurd - including TC showing up independently from him. (00:19:10 - 00:30:30)