Downrigger ball size?

I can troll a 4lb weight ~2 knots and the downrigger weight will be visible on my fishfinder.  I usually troll 20-65ft of depth.  Scotty Laketroller

There is still an angle to it but I use the FF to know exactly how deep it is.  Very rarely it will blowback beyond the FF scope usually when current/speed all line up but this has only happened a few times.

I use the cheapest downrigger weight I can find on Amazon with a fin on them and now I use a snubber as well as I snagged the reef once and it was sketchy.  Snubber should allow for some stretch.

So some feedback about the 2.5 lb weights...to light, lots of telescoping. Probably should have known that would happen at that weight. I’m going to try these in a 4lb version next.