James, as I look at having to replace more and more of the stuffing box, the PSS is becoming more cost-effective. I may have to bite the bullet and install one.
Thanks to everyone for weighing in. I thought maybe I was nuts, or not doing something right. As JimsCAL pointed out, the only hose sizes I saw were 1.75" and 2". The 2" is listed as being for a larger diameter prop shaft, so I decided to go with the 1.75". I didn't even realize that there WAS an intermediate size!
Main Sail, thanks for your feedback, especially about the band clamps.
What I'm now having trouble understanding is how the shaft log works. On my boat, there is a large metal plate in the area where the shaft passes through the hull. The shaft log (I hope I'm using the right term; it's the pipe/tube that the shaft actually passes through) appears to be integrated into this metal plate. Am I wrong? Does the shaft log somehow get fitted into the metal piece (e.g., is it threaded in)?
The picture is big, so I'm not going to embed it in the thread, but here's a picture of the shaft log area. It's tough to make everything out because of the corrosion:
If I go with a PSS, will I avoid having to replace the shaft log?