I don't personally do this, but "optimal lazy portfolio rebalancing" (as described here: http://optimalrebalancing.tk) may work well with a Bitcoin/alt-coin "investment portfolio." It's a portfolio rebalancing strategy where you only rebalance your portfolio when you purchase or sell assets. So, if you get paid every week, and want to add money to your portfolio every week, you purchase assets in a way that tends to balance out your portfolio.