Not to sway you off your search but I had a few of those years back and they just did not have the quality and function I wanted. Flag is way too short and the plastic gets brittle over time. I do think that Frabil bought or copied the design and so did other companies.
I have a dozen of the HT Polar-Therm Extreme ones that are way better but the same principal. 6 of them fit in a 5 or 6 gallon bucket, they have a tackle box and the best part is they have a retractable flag like an old radio antenna that is much more visible.
No problem with you searching for what you want but IMO there are now much better ones out here that do the same. I would like to find 2 more Jack Traps just like the 5 I already have because here in NY we can now use 7 lines.
Gam