"Due to the nature of our mission, I am somewhat unwilling to say that you will receive a percentage of the value on anything we find. However, it is possible that I will be able to negotiate a recovery fee in addition to any outright fee that we can agree on. Since this is not a guaranteed thing, what sort of money are we talking for getting you to agree to take us in the first place? And also, if we can manage to get a large enough number of sturdy small boats, we can both carry all the supplies and possibly recovered items, but also the larger portion of our group." Fen taps his chin contemplatively...