I agree that a WDH rated at 1,000lbs would be fine...., but, if you tend to load on the heavy side (family) and tow with fluids (fresh water, or black/grey tanks) then a WDH rated at 1,200lbs may be a good consideration.
The 2015 28DSBH has a UVW of 5,460lbs, add 600lbs (est.) for actual Ship Weight, 800lbs (est.) for family cargo (no fluids) = 6,860lbs loaded. Recommended loaded tongue weight range (13% to 15%) = 892lbs to 1,029lbs....., which a WDH rated at 1,000lbs would be fine.
Add 48gal. fresh water (or black/grey tank) = 400lbs + 6,860lbs = 7,260lbs would reflect a loaded tongue weight range of 944lbs to 1,089lbs.
Feel free to adjust my "assumed" weights to your personal loading habits, and/or if you know the actual Ship Weight of the 28DSBH in question.
Also, many folks don't realize that a WDH also supports any added TV cargo weight (% of) placed behind the TV's rear axle.
With any WDH it's effectiveness can be optimized (through proper adjustment) with a visit to the local CAT scale under loaded conditions.
CAT scale 'how-to': http://www.jaycoowners.com/forums/f3...v-tt-3871.html
Just some food for thought.