I am looking to buy a Terrova 80 and am debating on whether I would really use the Link feature. I can clearly see the benefit but most of my fishing is small lakes +/- 250 acres. I mostly want the record a track function and spot lock. 3-4 times a year I go to walleye lakes and troll and that's where I can see it being very useful, locking in on a certain depth from the topo GPS.

I am new to all this fishing stuff, bought my boat last year and bought a 688DI without much research, but price was good at the time. What is the cheapest HB I need to get into a the Link feature. How much do they go for? I assume the least expensive route for me would be a 798? I need to figure the $300 more for Link feature on the trolling motor and then the added price for a different HB. See if I think it would be worth it.

Thanks