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