PARACHUTE JUMPING ACTIVITY.

Narrative

THE EVENT OCCURRED WHILE PRACTICING LNDGS WITH A STUDENT IN BYRON ARPT; THE RWY IN USE WAS RWY 30. DURING THE TKOF PHASE; WE REALIZED THE PRESENCE OF A LARGE GROUP OF SKYDIVERS IN THE UPWIND AND R XWIND LEGS OF THE R TFC PATTERN. DIVERS WERE ALSO IN THE L XWIND BUT IN CONSIDERABLY SMALLER NUMBER. THE WIND WAS FROM A WESTERLY DIRECTION (L XWIND) AND MY REACTION WAS TO INITIATE A SHARP L TURN MAKING DIRECTLY A TIGHT L DOWNWIND TO AVOID THE CONFLICT; EVEN KNOWING THAT THE TFC PATTERN WAS R HANDED AND THAT THE DROP ZONE IS SUPPOSEDLY W OF RWY 30. MY MAJOR ERROR WAS TO CONTINUE THE TOUCH AND GO PRACTICE EVENT AFTER HAVING HEARD; WHILE ON FINAL; THE 'JUMP IN PROGRESS' WARNING ON THE CTAF. THAT WAS INDUCED BY POOR KNOWLEDGE OF SKYDIVING PROCS/TIMING; BY WRONG KNOWLEDGE OF THE ACTUAL POS OF THE DROP ZONE; (THOUGHT MUCH FARTHER FROM THE ARPT); AND BY THE OBSERVATION OF OTHER TFC TAKING OFF IMMEDIATELY BEFORE ME. MAJOR CONTRIBUTING FACTOR WAS THE IMPROPER POS OF THE JUMPERS ON THE DROP ZONE; ACTUALLY INVADING THE TFC PATTERN.