hey I need to create a situation when nine characters get stranded on the banks of a river upstream. The river I had in mind isn't anything special, i.e its not a massive river and it's virtually untouched by people. I guess you could say its kind of unknown. I need them to be in a boat or boats and for them to have to pull over. My minds gone blank and I don't know what boat nine teenage guys would be or could be on board. By the way its set in 1974 in California. any help would be appreciated.