When I see the word strategy I think of ways to make autosurfs more profitable. I have a tutorial that I wrote several years ago that makes it a little easier for newcomers to the industry to understand how to do this.
Also I found something that works really well for those who are trying to invest and earn a higher percentage on their investment. If you want to make more payouts you have to upgrade several times in the time that is allowed between expiries. For instance, if the upgrade expires in thirty days, you can upgrade every ten days to make the payouts come more frequently. Then after the payout, split it up to five days between upgrades as you are able. This helps to support the site plus gives you a faster payout at the same time. Use the higher paying autosurfs for this, then you'll be able to upgrade in the lower and slower paying ones with profits.