For those people who are either restarting your game, and are thinking about getting a rhino, here is a helpful hint that i came across accidently. After the flagship has been destroyed, and King tells you that you are going to pitsburg, rogues attack. When those rogues are destroyed he tells you to dock quickly. As you are leaving more rogues come. You can A: Run like a baby, or B: Stay and kill them. I chose the latter. I killed about 6 or so rogues. When I finally docked and got to pittsburgh, King gives me a different message saying "Well isn't it our conquering hero. You killed a rogue that had a bounty on his head, I will add that to your reward." After selling all of the stuff i got, i had enough money to buy a rhino on pitsburg, and had it for the next mission

I live in the tiny shadow of the thing they call your brain.