I beleive the proper drip rate is 0 at a stop and 1to 2 per min. running. Having said this it also matters if the boat is left in the water where the packing can swell or if your just using it for the day. You do need some dripping to lubricate the packing. Ther big problem is the boat sinking if left overnight witrh a torrent through the shaft gland and the Bilge pump runs the battery down. I only leave my boat in the water for a week or 2 at a time in the summer and then I make sure the packing leaks less than 30 drops a min when I put it in and after the first 8 hours it usually. slows to 2-3. I know this is long, sorry but I have also seen manuals that say to tighten it every time you put it away for the night.
Nautiqueless in San Diego