Currently in a volatile market, all the coins I recommend for everyone to build positions in should allocate 30%-50% of their position at the daily Bollinger Band resistance level, then add positions at the middle and lower band support levels for trading to reduce holding costs. Focus on coins, especially those backed by cash flow real-world projects, which definitely won't go to zero. During volatile markets, trading to lower costs is advisable. At least, the current volatile phase is expected to last more than two months.