Membership Dues are now payable. Under certain conditions, a tow is no longer a tow, it becomes a salvage operation. Basically according to Boat U.S. , towing is generally considered to exist in non-threatening situations and involves such things as mechanical breakdowns, light grounding and any operation not involving immediate danger to the boat or to a legally protected marine environment. Additionally, a toe requires only one tow boat with lines attached to a grounded boat to refloat it or to a disabled boat to tow it.
Salvage is a whole other game, involving imminent peril to a grounded, sinking or stranded boat.
A salvage situation can also exist if your boat is threatening or harming a protected marine environment or if the tow boat operator has to use more than one tow boat or special salvage equipment, such as air bags or high capacity pumps. If an emergency happens and you need commercial assistance, when you contact a service provider, ask then and there if it is a tow or salvage. You must be sure to give all the immediate situations for conditions and make them commit to their overall price per hour and also confirm it is a tow. Please read these two articles I mentioned. I have them if you cannot find them.