According to Cas Abbé, the emergence of random new meme coins trending on DexTools and extreme percentage gains in 24 hours are key indicators of the meme coin phase, which typically marks the final stage of altseason. Abbé advises traders to reduce risk exposure and consider rotating profits into stablecoins when these signs appear, as this behavior often signals a market top. This strategy is relevant for traders monitoring BTC, ETH, and major altcoins, as meme coin mania can impact overall market volatility and liquidity (source: Cas Abbé).