ACFT RELEASING SKYDIVERS ENCOUNTERS NMAC IN SNA AIRSPACE.

Narrative

I WAS FLYING SKYDIVERS IN A DEHAVILLAND TWIN OTTER OVER LAKE ELSINORE. ON THE WAY UP; I MADE A '2 OR 3 MINS PRIOR' RADIO CALL ON THE LCL CTAF AND ALSO ON SOCAL APCH. I RECEIVED A 'ROGER.' SHORTLY BEFORE ARRIVING AT ALT (9000 FT MSL); SOCAL ADVISED ME OF TFC AT 2 O'CLOCK AND 3 MI; WHICH I DID NOT SEE; AND I TOLD HIM SO. THE OTHER ACFT CALLED ME IN SIGHT. I BEGAN MY JUMP RUN; AND TURNED ON THE GREEN LIGHT IN THE REAR OF THE ACFT (THE EXIT LIGHT; ALTHOUGH JUMPERS ARE REQUIRED TO CHK THE SPOT AND LOOK FOR OTHER ACFT). AS THE JUMPERS EXITED THE ACFT; SOCAL CALLED WITH TFC AT 12 O'CLOCK; LESS THAN 1/2 MI; AND 300 FT LOW; I REPLIED NEGATIVE CONTACT AND THEN SAW THE OTHER ACFT PASS AT MY 1 O'CLOCK LOW. LAKE ELSINORE HAS BEEN IN THE PAST A VFR RPTING POINT. IT HAS RECENTLY BEEN CHANGED TO CANYON LAKE; BUT MANY PEOPLE CONTINUE TO FLY DIRECTLY OVER ELSINORE TO CHK IN. AT OUR DROP ZONE; WE MAKE ABOUT 55000 SKYDIVES A YR; WITH 50-75 FLTS GOING UP ON AN AVERAGE WKEND. WE WORK WITH SOCAL CONSTANTLY WHILE FLYING JUMPERS; AND THE CTLRS OVER THE PAST FEW YRS HAVE GOTTEN MUCH BETTER AT ADVISING ACFT OF OUR PARACHUTING ACTIVITIES. MANY TIMES THOUGH; SOCAL DOES NOT CORRECT TRANSITIONING ACFT ON THE RELOCATION OF THE VFR RPTING POINT; AND ACFT CONTINUE TO FLY STRAIGHT TO OUR DROP ZONE TO CHK IN. I EVEN MADE A PHONE CALL TO THE LCL FSS TO GET A STANDARD BRIEFING FOR A VFR FLT FROM FRENCH VALLEY TO CORONA; WHICH TAKES YOU DIRECTLY OVER OUR ARPT. EVEN THOUGH WE ARE A PERMANENT NOTAM; I RECEIVED NO ADVISORIES AS TO OUR JUMP ACTIVITIES; EVEN WHEN I ASKED HIM. I BELIEVE WITH CONTINUED EDUCATION OF VFR PLTS COMING THROUGH THE AIRSPACE; AND CONTINUING THE ALREADY EXCELLENT WORKING RELATIONSHIP WE HAVE WITH SOCAL; WE CAN KEEP TRANSITIONING ACFT INFORMED ABOUT THE INTENSE SKYDIVING ACTIVITY GOING ON OVER LAKE ELSINORE.