Two things to watch for when we are in a bull cycle waiting for an alt season to begin, are: - BTC dominance weakening/consolidating after a sharp rise - ETH/BTC becoming stronger. When ETH starts outpacing Bitcoin, this is generally a sign that we are on the brink of an alt-cycle.
As ETH is currently flirting with the 200 MA and the green support area, this is a pair I'll be closely watching for the coming days.