A well designed saddle (the Specialize Body Geometry Series is the "gold" standard) has a seating platform (the back half of the saddle) that is "dead" flat from front to back and "dead flat" from side to side.

And, there is only ONE correct position for a well-designed saddle: with the seating platform "dead" flat.

With poorly designed saddles, the back to front profile can look like a roller coaster. It starts out high, sinks, then rises again. There is no "level" part of the saddle to sit on, so the riders are always tilting these saddles up and down, trying to get a stable position.

Or, the owner of the bike has his bars set too low, which increases his "reach" and pulls him down and forward, putting pressure on the crotch. The owner tilts the saddle downward, which shifts him forward, closer to the bars. But, the saddle is no longer supporting the widest portion of his "sit bones".

The real solution is for him to raise his bars and bring the bars back closer to the saddle. Tilting the nose of the saddle down does not "cure" having the saddle too far from the bars, it simply conceals the problem.