If your TT is a 2012 (please confirm) Jay Feather Ultra Lite 197, then the specs are:
GVWR: 4,750lbs
UVW: 3,425lbs
Ship Weight: 3,725lbs (assumed..., yellow sticker on TT identifies actual))
Dry Hitch: 455lbs
The most accurate way to respond to your original post is a CAT scale weight of your TV/TT under loaded conditions. This information eliminates guesswork. Since we all have different loading habits, results can very.
Jayco197 moderate loaded "assumption": (3,725lbs) + (battery, etc. @ 100lbs) + (cargo @ 600lbs, no fluids) = 4,425lbs loaded.
RV manufactures recommend a 10% to 15% loaded tongue weight (of loaded weight 4,425lbs) = 443lbs to 664lbs loaded tongue weight range.
If you can keep your loaded tongue weight range below your TV receiver's "weight carrying" weight limit, you don't necessarily need a WDH....., anything above requires a WDH (but can't exceed TV's "weight distribution" weight limit).
Based on worst loaded conditions at TT GVWR of 4,750lbs, tongue weight range = 475lbs to 713lbs.
So depending on your loading habits a WDH rated at 600lbs would work, but a WDH rated at 800lbs would accommodate worst case loaded scenario.
Hope this gives you something to work with..., but please note where I made assumptions (modify as required).
Bob
On Edit: Distance of travel doesn't influence WDH requirements.
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2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2002 GM 2500HD 6.0L/4:10 (retired)
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (Strait-Line)
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