Sentence 1: I was camping in the woods one day. 
 Sentence 3: They waved and I invited them over 
 Sentence 4:  When I told them I was breaking camp they offered me a lift 
 Sentence 5:  The boat nearly tipped over with all my stuff in it 
 Option 1: There was a holiday boat parade on the lake that was fun to watch. 
 Option 2: I saw some people in boats passing by.