Gann Fans are a very good tool. Sometimes people use Gann fans to judge momentum exclusively. However, "Gann-man" an investing superhero, uses this tool for forecasting resistance and support over time. I like to use Gann fans when the price action is very coordinated to the wick tops and wick bottoms on a Fibonacci level; as is shown in the above chart.
I normally trade based on a project's core purpose, ignoring projects that are bogus or, "not all that, bro." Furthermore, I am not a huge fanatic over Ripple (XRP). However, the chart is speaking to me here. The method of charting employed above is based on moving averages to analyze former momentum and current momentum of short term price action; regardless of bull or bear trend. Then, this information is used to forecast future price action. Cross referencing price movement within Fib levels show when momentum shifts will probably occur in the future. Based on this analysis above, there seems to have been a momentum shift from resistance to support for XRP at the beginning of December 2017. If this trend continues, which the moving average seem to affirm, then XRP could rise in price dramatically or at a stable rate over a period of months and possibly into the spring.
There is evidence for a XRPBTC support trend from Dec-March. This is especially so if Bitcoin corrects below $12,000 or $8,000, as there is strong evidence to back the claim that XRP is negatively correlated to the price of BTC; which is also included in the above chart. Ripple's is a choice hedge against BTCUSD because XRPUSD could potentially out preform BTCUSD during short term periods of BTCUSD consolidation. In both scenarios (correction and consolidation), XRP is a great short to medium term investment. However, other alt coins may fair better versus the US Dollar during periods of BTCUSD consolidation. Furthermore, there is always the chance that Ripple (XRP) decides to burn some of their currency supply. This is probably one of the greatest reasons to hold XRP long term (not many), as there might be a drastic decrease in supply (XRPBTC). However, coin burns by centralized players are a weak fundamental reason to invest in any cryptocurrency for the long term.
Setting a stop loss at 5% to 10% below purchase price would be a cautious consideration; a limit order for 3 X profit (XRPBTC) would not. Trade at your own risk. Both my ramblings & chart above should not be considered coherent, sane or of value in any regard. Cheers lads and ladies.