You might take a look at NYAN.C which has the potential to earn more than just pirate alone.
But it also has a very high risk 
But sure a couple of them might be a good investment.
The second point is, with the recent release of Pictures of pirate as well as some proof on concept and evidence of what he does, I want to ask the investors once again, would you be okay with a 3-5% exposure to pirate?
After some thought and research I too believe the chance of pirate's not being a ponzi are great, I would be ok with up to 15% pirate's exposure.
My 2 satoshis
It's a weighed risk and with the current risk to profit ratio I think it's worth putting a couple of percent into Pirate.
//DeaDTerra