INSTRUCTOR PLT AND STUDENT EXPERIENCED NMAC WHILE STUDENT WAS FLYING. THE CONFLICT OCCURRED IN A HIGHLY CONGESTED AREA NEAR A COMMON VFR RPTING POINT. RPTR SUGGESTS THAT LCL OPERATION PROCS CONNECTED WITH THE VFR RPTING POINT BE ALTERED AND FORMALIZED.

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AFTER DEPARTING CAMARILLO; CA; ARPT; MY STUDENT AND I MADE A R-HAND; 45 DEG DEP TOWARDS THE NW. CLBING THROUGH 2200 FT MSL; MY STUDENT OBSERVED ANOTHER ACFT MANEUVERING VERY CLOSE TO US. BECAUSE MY STUDENT WAS FLYING THE ACFT; HE TOOK MILD EVASIVE ACTION TO ENSURE ADEQUATE SEPARATION FROM THE OTHER ACFT. THIS OTHER ACFT WAS A BLUE AND WHITE PA28. THIS ACFT WAS MANEUVERING AT A HIGH DENSITY; VISUAL RPTING POINT FOR BOTH OXNARD AND CAMARILLO. THIS RPTING POINT; 'SATICOY BRIDGE' IS A VERY BUSY PIECE OF AIRSPACE; WITH PLTS RPTING OVER IT; NEAR IT; AWAY FROM IT; AND AT VARIOUS ALTS AND HDGS. I SUGGEST STANDARDIZATION OF ALTS AND ACTUAL POS FOR PLT RPTS INBOUND OR OUTBOUND TO CMA OR OXR ARPTS. THIS IS BEING DONE INFORMALLY BY LCL PLTS; BUT THERE WILL BE A MIDAIR IF THIS CONTINUES; I BELIEVE THERE WAS A MIDAIR HERE ABOUT 5-7 YRS AGO. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: FOR ALL PRACTICAL PURPOSES THE SATICOY BRIDGE RPTING POINT IS AN INTXN FOR CMA ARR AND DEP TFC; OXR ARRS; AND TFC INTO SZP (N). DURING LOW WX DAYS SZP TFC IS COMMON BECAUSE SATICOY BRIDGE IS LOCATED IN A BASIN (ALLEYWAY) WHICH RUNS SW THROUGH NE FROM THE LAX AREA TO THE SZP.