First aid kits for rafting

I've allways had those blue kits you get at sporting good stores and thankfully really only have used band-aids. I left a bag un zipped on my snowmobile and gifted my kit to the trail this winter. Iam usually in charge cause iam dad and wanna get a good kit just for the boat. Any one recommended? Or should we make a list that could be used by everyone? Any medics , firt responders or wilderness emt s out there want to offer advice? Thanks Charlie