After Davy and Russel are shot out of the canoe by mike fink. We then see a shot of the Gully Wumper as the camera pans to the right Russel is wearing his hat but in the next shot his hat is off and nowhere to be seen, the background also changes.
When Colonel Plug is seen playing his banjo in a group scene, he is plucking his strings slowly and sloppily with his thumb. But when the camera zooms in for tight close-ups on the banjo strings, his hand is strumming the strings fast and hard.
When Davy watches Mike Fink pull his boat ashore the first time they meet he is wearing his coonskin camp and jacket. He walks over to talk to Mike but is suddenly carrying the hat and jacket.
Davy is headed south on the Mississippi to New Orleans. In most scenes they are going against the current which would mean they were headed north.
When the stunt man standing in for Clem Bevans as Cap'n. Cobb fell into the river when his boat's tiller broke off, his white wig came off in the water, revealing the stunt man's own dark hair.
When Davy's and Georgie's boat rejoins Mike Fink's boat on their race down the Mississippi, power-motor prop-wash is visible at the stern of Fink's boat, which is supposedly propelled manually with push-poles.
The majority of the firearms used in this movie are meant to be flintlock rifles, pistols and muskets. However, due to lack of inventory during the 1950s in Hollywood, the guns used are mocked up to resemble them, but are actually Springfield trapdoor rifles with crude firing mechanisms attached. The breech of the Springfields immediately gives it away that they're not true flintlock firearms. The only exceptions are the rifles that Davy Crockett and George Russell carry.
The move is set in 1810. Davy asks Georgie to charge up Old Betsy in the saloon. Davy got his rifle, Old Betsy, in the 1820's.
The real Samual Mason and the Harpe Brothers died between 1799 and 1804 the movie is set in 1810.
When Little Harpe spells the name of the keel boat he refers to the letter Z as Zee. The movie takes place in 1810 back then Americans would have still been calling it Zed. Zee was not used until the 1830's.