Hi Tom,
There were some big outriggers out there as well. An example is the
Fijian ndrua or
Marshallese Walap.
Still, your point is well taken. The longest voyages were almost certainly in double-hulled Polynesian Vakas, of about that size, and they do carry a quite a lot.
The biggest issue Polynesian "canoes" face is that we call them canoes, not ships, even though they were multi-hulled, multi-planked, deep-ocean boats that (in the cases above) couldn't be paddled easily or at all.
Best,
F