Continuity mistake: Goldie and Mel are on his boat at the end - Mel unfurls the sail to reveal the words "Mister Wiggly." Note that the words are printed at an angle: rising from left to right. Instantly the scene cuts and the words on the sail are printed at the opposite angle: lowering from left to right.
Audio problem: In the scene were Mel and Goldie are in the salon, and she says "I called him sick", you can see that her lip movements are totally wrong. It appears this line was changed as her actual words appear to be "I called him a prick," which is why the flamboyantly gay hairdresser replies with "Oh he is a prick" with such an implying tone.
Plot hole: The morning after being shot in the butt at the gas station, Mel Gibson calls witness protection, and tries alias after alias, but finds out they are unknown to the Feds because the evil dude deleted his whole file. Problem is, the agent who has been looking up the name she supposedly did not find, has the computer screen on an empty "Witness Number; K239" page. Which is the right one! How is it possible? The aliases she looked up do not exist, but somehow they returned the appropriate record number. (00:29:10)