Pinsir found on safari zone!go to the top and use mach bike and go left and go down and you will see grass and find it over there.(required pokeblock case).(on safari zone)15% you can find it.

surskit found on route 102 and use surf at the right side.it's little bit hard because always find marill there.that's why i said rare pokemon.or you want to find it easyly at route 117 or beside left the mauville city and found on the grass.(on route 102)3% you can find it
(on route 117)7% you can find it

skitty found in route 116.it's little bit hard to find it but it's more easy to find if we balance skitty and surskit,skitty more easy to find.(on route 116)13% you can find it.

NOTE:please don't click any thumbs up or thumbs down before you try this.thanks^^