Originally posted by Nascarman:

I always found a boat to be more effective and easier to use than a cart. If you can, boat your ore as close to your base as possible and then use a cart to get it the rest of the way, as boats suffer no slowdown or movement penalty for being filled.

Been doing that for the swamp runs, I fill up a dungeon with ore and slow wobble back to the boat with like 105+ Iron :P

(Doing that now with 300+ Silver atm) LOL good thing i can just throw the ore down the hill and see the glitter (Boat is just below the mountain) :D