Torstennnn, no embarrassment when asking questions, (only when providing slick or irrelevant replies).
A positive landing in the sense of avoiding hydroplaning, is a landing where the aircraft vertical speed is sufficient for the tyres to ‘cut’ through a thin layer of water and make a good ground contact to achieve quick wheel spin up.
Numerically, depending on aircraft type and the ‘feel’ of the landing gear, normal landings are in the range 2-4 ft/sec, many much less (‘good’ ones); 6 ft/sec may be uncomfortable, and 10 ft/sec the approved maximum (but not necessary the limit).
Thus, when landing on a wet surface with puddles, or one which is prone to flooding (3mm depth), aim to achieve a vertical speed at touchdown towards the high end of normal. In particular avoid a smooth, low vertical speed contact or any opportunity to ‘skip’ (mild bounce where the landing gear extends but the wheels may not leave the runway).
There are of course many other variables and avoidance techniques for hydroplaning, but a positive landing helps to reducing one of the initiating conditions.