I'm not sure I agree that I'd automatically get a sway issue. I've towed 10k 20' and 24' enclosed trailers on both a 24" and 48" Supertruss extension behind my 10" camper and never had any additional sway issues.
I wouldn't be hauling toys in the Toyhauler, mostly just want one for the better boondocking abilities, and the ability to haul something in the future.
I'm not interested in a class A or C with an enclosed trailer hauling a jeep. That doesn't allow me to camp in the remote areas I want to go.
In the areas I want to camp, I'd pick a nice campground to setup the toyhauler. Then if there were areas we wanted to explore for a few days, yes we'd leave it unattended at the campsite. We typically leave our trailer unattended all day already as we usually go on long day hikes close to wherever we camp.
Looking into the triple axle toyhaulers now like the Eclipse Attitude's and it looks like around 1200 to 1500lbs of tongue weight is the norm.
Are the new triple axle ones similar to my older WW in that they have more TW when there are no toys in it or are they better balanced?
15' Ford F450 4x4 Platinum Bronze Fire Metallic
17' Ford Explorer Platinum 3.5 Ecoboost Ruby Red Metallic
78' F250 SC LB 4x4 - highly modified
2003 Weekend Warrior FS2600 toyhauler and the toys to fill it
1997 10' Northland Grizzly 990 Ext Cab