I have sold my bounty tokens before they got dumped badly on exchanges so I don't consider it as a profit or loss because I just check the ICO prices and the price of my coin at the exchange. I feel bad for many tokens as they were pumped by 500% after I sold them and when I could earn $100000, I sold them at $120 while others reached $10 from $1000. Can't say which tokens will reach what value and hence it's better to sell them as you earn them.
You are saying it's better to sell them as you earn them but in your case you sold some bounty rewards for $120 when you could've made $100 000? I know this is probably 1 project out of 1000s but for me this would be reason enough not to dump everything as soon as I get it.
That's because I did not buy those coins and earned them so in this case I only get profit. Investors on the other hand have to look out for profit and the coin which I was talking about was PRL that had only been listed on Etherdelta and when it got listed on bigger exchanges, it pumped like hell. It was during early 2018 and since then selling coins has never been profitable. I dump everything right now as the market won't be able to recover for a long time till may be 2020-21 and I can't be so patient till then as my country has anyways stopped banking all cryptos.
Ahh I can remember Oyster Pearl. I guess such an opportunity hardly will come back (if ever). But I still think it can make sense to hold bounty tokens of promising projects until the next bull market comes in full swing.