I first flew skydivers in the days pre GPS. One had to know the local area landmarks and their relative bearings to the DZ by sight, even then the pressure was on to fly above 4/8ths or more. Obviously OVC was not possible, and the aircraft I flew was barely VFR instrument equipped! I still occasionally fly loads of skydivers, the aircraft I fly now is possibly the best C182 for the job in Australia, the pressure is still on to break the rules. Hopefully within weeks, that pressure will be off with the final signature on cloud manual approval.