Well planning a trip is easy... Basically you need to find a river, I would pre-run it then you will know where the problem area's are, and can set up saftey teams using experienced canoers if so needed.
THIS IS FOR GOING GROUP style like we do every year. We ALWAYS pre-run the river 1 WEEK ahead of time to find the mean areas!! Then setup saftey teams at each area were we think a problem might occur. Everything from little rapids to portages. Everthing is well thought and plaaned!!
Also we try to put in our group 1 hour ahead of the rest so the most experienced will be in the