Have just read through the examples you posted on jfholdings, and I must say the clarity of all your charts and posts both there and here is impressive. Could I suggest a couple of additions? When comparing investment systems, I find it significant and helpful to see statistics for Maximum Drawdown, Sharpe Ratio and Volatility. (E.g. in Mebane Faber's papers.) From just eyeballing the example charts on jfholdings, it appears that, cash included, overall portfolio drawdown is only slightly reduced by AIM compared to 100% buy and hold, even with 20 percent starting cash, and the increased CAGR is also quite small.
Daisy42