I know that you are asking about the verb tense, and the answer is that you should use the past simple, since 'when I was a boy' makes is clear that the time is past and finished. However, what caught my eye was the phrase 'naughty acts', which is not native and sounds rather obscene or salacious to me. I suggest: No, but I had my fair share of trouble/scrapes when I was a boy.
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