Hello Greg,
I did actually change the icons in HumminbirdPC to little fish.
I twigged to this maybe being the issue yesterday after I posted the above question.
You are correct, Ver 4.3.8 of HumminbirdPC doesn't appear (to my eyes) to have the Spot Lock icon in its set.
If you import the SLxxx points into HumminbirdPC you get the below icons and that is what the software sends them back to the SD card and ultimately the sounder as well.
For the moment I think I'm better off editing Spot Lock points in the sounder than in the software.
I wasn't able to find the Spot Lock icon on my 798 to put next to the points I want to have this feature either. (I tried this on the river on Saturday when I worked out I'd lost my Spot Locks)
I have Version 7.120 firmware ready to be installed in my 798CI SI HD's and Version 2.070 firmware for my I-Pilot Link Controller and Version 2.020 for my remote.
I also have a problem with my Minnkota iPilot Link which I believe is either battery or hot joint related. It works great on the lower speeds and up to about 8.
Once you try and run at 10 (of which Spot Lock sometimes needs) it will just drop out. The "System Ready" green LED goes off, the remote says "Motor not found" both for about 5 seconds.
The green LED comes back on, the remote locates the motor and the cycle repeats.
I'll have some more of a play maybe tonight with the whole system.
Thanks Greg, much appreciated.
Geoff