To counter the "bean-counter" point of view that monthly training is excessive - do you have a strong Health & Safety legislation & culture in your part of the world?
It often gets knocked (usually rightly so) for excessively getting in the way of us doing our day-to-day jobs, but it can be used to our advantage in situations like this. You can argue that the organisation has a legal duty of care to its staff (and customers) to give you the level of training you need to minimise risk. Get a H & S expert to risk-assess a night wet winch and they will go apoplectic!