I do second your thought and idea on that. I sometimes regret missing some amazing opportunities all because I decided to participate in several bounties and the most promising among them all was the once I wasn't paying much attention to. The few you can handle at a go and do it better is very import than many and getting nothing good out of it.
Maybe there are instances that we are making investment on all of where we think that its an opportunity but along the way our expectation is not the same on reality but that is not a problem if we can manage it all including its risk because its undeniable if we plant more trees then we can harvest more fruit if fortune strike.