Methods for picking up grains?

I ended up unloading tons of corn on the ground due to me being an idiot and tweaking a mod tipper too much. Greatly increased the capacity of a tipper not knowing when it was full it was literally impossible to move. So i ended up having to drop multiple piles of corn along the way to the market thanks to hills i couldn't get over. Now i have tons of corn all over the place and the only way i can figure out how to get back into a tipper is by using a bucket which is pissing me off because of how slow it is.. I've tried the conveyer but its more trouble than its worth. Any ideas?