This thing is so convenient that it makes me mad that it's not the standard for everyone. 

 

haven't seen any quite that neat from anyone else. 

Certainly beats the plastic sleeve over Seaguar bulk spools. 

 

When I saw your thread title, what immediately came to mind was a hook keeper, which is absent on all Japanese rods.  Doyo bait reels have a pop-out hook keeper that will work in a pinch. 

Since I'm trying to manage up to 3 rigged rods on a kayak, I need some kind of hook keeper. 

Tinkering around Hedgehog website, ran across this add-on ditty, and threw one into an order (Ambassadeur parts). 

My Steez is the one reel I use on 2 Japanese rods, and either one may be on the kayak. 

May not be classy, but totally  functional, and more out of the way than it may appear. 

There's more expensive spool 'tamers' out there - specifically tagged for fishing line...but I got a pack of these.

Labeled for beading wire, but everything from 4# YZH to 15# Tatsu to 40# 832 works just fine, thank you.

https://smile.amazon.com/gp/product/B00KAZ137Y/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1

I've never had trouble keeping up with new line spools with anything more than the provided notches and a piece of tape. 

Though I understand the need for keeping up leader spools on the water. 

 

It's loaded reel spools that need keeping.  I use the soft velcro tape from Amazon made for keeping up electronic cables. 

I bought some the Samurai FC early this year and it's great line.  I would say it falls somewhere between Invizx and Tatsu.  The line keeper works really well.  I have since emptied the spool of Samurai and used the keeper for a different spool.  Works well but it's not a universal fit

Painter tape