I will assuming your question is about marking, as there is no way to prevent or predict whether a dog will lift his leg to pee or if he will squat. It is not fool-proof. A lot has to do with the consistency of your housebreaking also, not just the timing of the neuter. If you wait too long to neuter, you can almost guarantee a marking problem. Correction for all potty accidents is the same as we always recommend.
Nothing changes for males who mark.
The owner should still be alert and watching. I'd risk the marking.