I think a short abbreviation works well since you already have a name - Colton.
Something like a Colton DH2 (maybe for double haul squared, or simply the buyers imagination) You can use the 2 standard or superscript as "squared"
This give you a line of rods that can expand to "Colton DH3", Colton DHX, etc.
It also makes it easy for internet communication like "what should I buy, a glx, ticr or dh2 for my first fly rod?"
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