I currently carry a 60# Orange Halcyon CC Lift Bag. I use it for a drift ascent line, emergency upline, additional surface flotation in rough seas, etc... I now want to add an addtional bag as a backup and for using to communicate with the boat crew. Should I carry a SMB and a bag, and should the second bag/SMB be yellow? Is there a standard protocal for using one vs the other and one color vs. the other? To date, I have let the captain and DM know if I was planning on deploying the bag and for what reason. If they saw it and I hadn't planned on using it, they then knew something wasn't right. But with two bags of differenct styles or colors, I was planning on one being for normal use and one for emergency comm. Any suggestions?