Given the present location, it might be easier to remove the entire deck of the boat just to get at the gland .
I do remember once seeing a ship where an engine was being removed. This was done through an enormous hole cut in the side of the hull. Ever thought of cutting a large hole in the bottom of your hull and working on the gland from the underside .
As we know, everything on a boat is a matter of compromise and from what we see here, this may be an easier choice compared to your existing repack scenario. Now, to figure out how to repair this gaping hole in the bottom of the hull .
Not too, too clear here but if you do intend to pull the shaft all the way back, you'd still be stuck with having to remove the prop shaft flange which would not be a piece of cake. This assumes that I understand you correctly. If you were to do this, you COULD then easily remove the old packing. However, you'd still be faced with installing the new packing rings which would have to be done with the shaft back in the original location.Wondering if it would be easier to disconnect the shaft from the coupler and slide the shaft far enough to remove the box from the shaft in order to replace the stuffing.
I do remember once seeing a ship where an engine was being removed. This was done through an enormous hole cut in the side of the hull. Ever thought of cutting a large hole in the bottom of your hull and working on the gland from the underside .
As we know, everything on a boat is a matter of compromise and from what we see here, this may be an easier choice compared to your existing repack scenario. Now, to figure out how to repair this gaping hole in the bottom of the hull .