Sentence 1: Jack had never been on a boat before. 
 Sentence 3: He was expecting a small row boat but the boat was actually quite big 
 Sentence 4:  Jack was too busy looking at everything on the boat to even fish 
 Sentence 5:  Jack decided he wanted to buy a boat when he got older! 
 Option 1: He was excited when his uncle asked him to go fishing on one. 
 Option 2: His uncle was taking him on a yacht.