Many thanks for all your wisdom here. I really appreciate you taking the time to share what you have learned. And yes you are so very right of course. Though I have not been good at sticking to the no more than 3% rule however!
Apparently I entered at a time when Ethereum & Dash were growing uncharacteristically fast, so basically got lucky with my main investments and put the rewards back out into the field when they stopped growing.
Only time will tell how I did with my choices :)