Heavy or light positions, what suits you is the best.
First: Your ability level
If you are very skilled at entering the market and often catch the explosive points, then you should seize the opportunity to take a heavy position.
If your entry ability is weak, then a light position is definitely better, with a wider stop loss being more favorable, otherwise you will repeatedly hit stop losses.
Second: Your level of desire
With a high desire, your position should definitely be heavier; with a low desire, your position should be lighter.
Third: Your risk tolerance
For a single trade, how much loss can you accept? If your tolerance is high, your position will definitely be high; if you cannot accept a large drawdown, your position will definitely be light.