Just an idea...
Yes, that's totally legal (assuming you can get into that country!). AIUI, several British dependencies don't levy CGT (IANAL so I could be wrong), for example.
Bear in mind the US are a totalitarian state and their "IRS" claims the right to tax US citizens anyplace on earth. So if you're American, whether by birth, descent or naturalization, you must either:
- Pay Uncle Sam his dues so he can kill more innocents!
- Renounce your US citizenship
- Ignore the IRS (best stay away from the US though!)
I'm not American, and I travel a lot, so I'm not paying any CGT or income tax to anyone. Frankly, that's the only way to live.