Alot of the pros are so thick and so fast that (1) if you loosen up to apply them you'll get pounded and (2) they have such thick muscle on their frames that the nerves become harder to locate and less effecive when found.
That's at least from my personal experience.
Sig by Toxic
Barnett - Toquinho -Werdum - "Nurmie"
Z. Gurgel - Morango - Rocha - Tiequan