It's learned in this episode that Rodney is an excellent sewer, he can sew up a broken boat back together and fix it!
A running gag in Get a Lifeboat is that whenever Ranger Stu is about to see Mr. J and Rodney stranded on their boat, Andy keeps blocking Ranger Stu's view!
Mr. J: Look, if we're going to be in this boat, there are going to be some ground rules.
Rodney: But we're not on ground.
Mr. J: Rule one: No saying (in Rodney's accent) but we're not on ground.
Episode Title: Get A Lifeboat
This is a spoof of the phrase 'Get A Life'.
Rodney trying to drive Butch out of Leon's tree using noise pollution might be a reference to the way the U.S. government used heavy metal music to get General Manuel Noriega to surrender his position of government in Panama in 1989.