Personally, my approach is to buy good condition Sealine Super High Speeds whenever I can get them 'right'. They were bulit tougher than anything you can get for 5 times the money now...
I mounted the Sea dog tables with a pipe flange with a 6" piece of pipe for both of my boats so I can just pop them into a rod holder for fillet time- simple and out of the way most of the time
Sea-Dog 326580-3 $73.94 Fillet Table Only - 20" | Zoro.com Ones I got are 32" - Pretty easy to make any kind of base you want with a pipe flange pretty cheaply. Seems like I got a pair of these for like $50/ apiece but cant find it now...
1) Short cable with antenna rthat goes on rigger 2)Long cable from short cable with antenna that goes to unit 3) wiring harness and fuse to go from unit to power- What’s it worth to ya? (PM me)