I think the manufacturer is giving you a perfectly correct answer.

What isn't being said ( by you or he ) is what amount of water is there...
and how much is "normal". No bilge pump can pump the last drop out. The real
question is "How much" and "how" did it get there?

If you launch the boat totally dried out, just let it float at the dock, and
then see water in the bilge ten minutes later...you've got a leak. It might
be, as some have pointed out, a "normal" trickle from I/O bellows. I had a
sailboat that had a "normal" leak from the packing glands when the engine
was running.

If you launch dry, check for no water and it is still dry...and then run the
boat at a moderate speed..and you've got water..you've got a leak.

If you have to run the boat full speed and now see some water, it might be
spray???

Only you can answer those questions.

Try experimenting until you find exactly the situation where-upon she takes
on water.

I, for one, would like to hear a follow-up after you've done all of that.
regards,
RichG
http://groups.msn.com/CarolinaSkiffOwners