As we all know about the Hoverboard glitch. If you don't know about it, it is a glitch of entering the race on Rilgar as Ratchet not on is hoverboard, and there is a large amount of boxes that you can get buy using the Taunter and holding circle for about 10 hours or so. Well I have found a way to make that time shorter by a bit but, I actually requires you to be at your PS2 or PS3.
Normally, you would go to Rilgar to farm bolts. But there is another planet to farm actually, people may have or may not have known about it. The planet is Quartu. Yes, Quartu.
In NG+ (or Challenge Mode) there is a passive 1.5x-2.0x multiplier. Well in Quartu, if you do the Giant Clank Section to get the Infobot to Kalebo III, you can redo it again, again, and again.
I have done this multiple times, and it is faster.
Rilgar Farm: 2,000/min—12,000 after 6 minutes—360,000 after 3 hours
Quartu Farm: 3,000/50 sec.—18,000 after 6 minutes—540,000 after 3 hours
I speedrun the main trilogy, check me out