It is true that if I had been more careful and not revealed my total dig amount, people would not have caught on so quickly, and I could probably have made more BTC from my CLAMs. But as dooglus said, I was adding 500k clams to a total supply of 800k clams. The price will go down no matter what. If no one knew how many I had and I sold it real slow, the price might have gone down much slower. I would have made a lot more money, and a lot more people would have lost money.

Remember that CLAM price had a huge run up before I started digging. Clam had only 1 use case, which is JustDice. The price at that time was not sustainable. I saw that and decided to cash out at that time. I'm sure others saw it too and cashed out. Waves and waves of selling is not because of me. Of course, I added to the selling pressure by putting in limit sells above market. But that doesn't really matter, because once Dooglus revealed my total dig amount, the market started to panic. The price fairly quickly dropped to the new "true" price given the new information out there. I did not increase my selling. Actually, my selling strategy has remained unchanged since the beginning.

Thanks BIP38 seems like what I want. But there doesn't seem to be an easy tool to do the encryption or decryption yet. I don't run Windows.
And here's my dead man's switch: h t t p  :/ /www .deadmansswitch . net / (DO NOT TRUST !)