Group size and for communication.

One to two group is not easy to make a rafting trip. It is better into big group and you able to lead raft. The lead raft should be the trip leader that person sets the pace, has a better understanding of water rafting also better understanding of the river section that about to go on. You should have a sweep raft. The sweep raft is second most experienced raft guide on the river. The sweep rafts job is to make sure every body down stream of them is doing okay and fine. The sweep raft tends to have first aid kit. It should bring down first aid kid to the incident. If you have several group and you can split them to make easy and you need every part leader and sweep. If you do not have leader and sweep for each part you can make communication system. They can often be a big distance between the last and first raft so you can have communication between those two rafts is very important to touch each other. It must be not big distance between raft, the lead raft and second raft. Try to raft together, stay in an organized trip and never pass leader raft and never fall behind the sweep. If you together then it is so easy to take care and able to help.