You never book the charter until you have cash from every person who said yes ,,when they hand ut to you ,you need to tell them its non-refundable.. this way ,if it is them who screw up your charter PLANS,then it is them who will pay the cost and feel the pain and not you nor your real friends who stuck it out out..I hate it when suddenly ,you get an e-mail " we can't go because my wife's sister is coming to see us that week " !!! Tell them until you have their reservation money in your hand [I charge 50 % of their charter fare ] then they are not going ..once i have your money in my hand and the check has cleared then they are considered a booked charter friend but never until you have their deposit from them..

I go up canoeing to the arctic circle every few years and I always use the same system..you have to or you will lose your shirt !!!!!