// ко всем сток
Fish_IsPlayerNearPoint(playerid) {
    for(new i; i < MAX_POINT_SONAR; i ++) {
        if( IsPlayerInDynamicArea(playerid, fish_sonar_area[i]) )
            return 1;
    }
    return 0;
}

// в секундный таймер
if( player_fish[playerid][pIsFish ) {
    if( !Fish_IsPlayerNearPoint(playerid) ) {
        player_fish[playerid][pSonar] = 0.0;
        Fish_ShowTextDrawForPlayer(playerid, true);
    }
}