Using the CHOP_LRSI (Laguerre's Time RSI with choppiness index overlay) and my Fibonacci Moving Average indicator, I base my long term buy and sell zones by the indicators marked in bullish and bearish ellipses in green and red respectively. A couple of those trend indications are based on support and resistance lines, naturally.
These indicators seem to work great on many of the higher cap crypto-assets; the weekly chart seeming excellent for the long-term trader.