After the 2017 highs there was a very profitable Alt season after it dipped.
I'm watching the LINKBTC pairing as my indicator for an Alt season. If it breaks this obvious downtrend line then that will be my signal, and it looks like its preparing to.
I've already packed my bags and cashed out my BTC profits so I'm good either way, but I have no reason to believe there won't be an Alt season. Alt BTC pairs have remained resiliant, and also keep an eye on BTC dominance. It won't take much BTC to pump alts.