How would I go about setting up a test that would trade LTC for BTC and BTC for LTC? 
My attempts thus far have failed. 

Here's my last code snippet:
 

public override void Initialize() { SetStartDate(2017, 1, 1); //Set Start Date SetEndDate(2018, 3, 1); //Set End Date //SetCash(3100); //Set Strategy Cash //SetBrokerageModel(BrokerageName.GDAX, AccountType.Cash); AddSecurity(SecurityType.Crypto, symbol, TimePeriod); security = Securities[symbol]; foreach (Security s in Securities.Values) { s.FeeModel = new CustomFeeModel(); } Portfolio.CashBook.Add("BTC",1.3m,1); Portfolio.CashBook["BTC"].AddAmount(1.2m); }