Just how heavy is the trailer? The Scout II is technically rated to tow only 5000lbs - with an equalizing hitch and brakes.
If I were shopping for a *tow-rig* I would start at the LWB Scout II Traveler or Terra pickup. 118" WB to help cut down on some of the "tail wagging the dog" problems.
If you're not set on a Scout II, you could look at it's bigger brethren - the Travelall and pickups.
I have a '72 Travelall that I use to tow my race Scout II around on my 16' car trailer. It works pretty well, and is setup a lot better than the SII for towing a SII. Mine is only a 1/2T, which is a liability, but I'm taking steps to convert it to a 3/4T setup, and/or just replace it with a short-box 4-door IH 3/4T instead.
The T'all is a full-size truck/wagon (think: Suburban). Mine is 119" WB, open-knuckle, 4x4, 392/auto/NP205. With the factory hydraulic actuated electric trailer brake controller and equalizer hitch, it tows my tandem axle pretty well (particularly now that I put shocks on the Travelall)
It's not too big to drive around town, made an excellent winter vehicle this winter (compared to my locked SII with ratty soft-top and huge air leaks). With 33x12.50s on it I took it fourwheeling a couple times and had NO problems getting it to go anywhere I wanted it to (and I was right behind the locked-up 36" equipped BBronco). The width and length were never a problem wheelin' - and on our Christmas tree run, strapping 3 big trees to the roofrack was a breeze.
You can fold down the rear seat and throw the air-mattress in the back for campin', too.
T'alls came in 3/4T versions which would be an even better tow-rig than any Scout II.
-Tom Mandera, Helena MT
'72, '77, '77, '79, '74 Scout IIs
'77 SII Traveler-utility-trailer conversion