A simple strategy would be to re-invest your dividends back into the Trust.

When you have achieved the holy grail of investing in that you double your money, you take out your stake and re-invest in another high yielder.

I will use NESF as the working example but as always best to DYOR, a blended yield of 17%, an investment of 10k would be yielding 17% on your initial stake, (£1,700 plus) which you should receive as long as the Trusts stay in business or don’t change their dividend policy. All you need to do to monitor your Snowball, is to check the latest dividend announcement from the company. There are various web sites that allow you to do this, if you don’t have your own share monitor.