Re: Question about towing
I agree with the surge brakes, but not on a 21 foot trailer. These trailers when there this long pull way different than a normal length trailer. Alot of your discision is going to have to be based on how the trailer is set-up. Where the axles are located is a concern with a trailer this long. The tongue weight can almost be double of what a 14 or 16 ft trailer would be.
You need IMO electric brake set-ups on this long of a trailer. They are instant and don't rely on a surge to get the job done. Electric brakes are also adjustable for different weight loads and adjusted for different tow vehicles. All trucks are going to handle stopping a trailer that size differently.The 21 ft trailer will also be alot harder for various people to get use to driving with, turning, cornering, stopping, excellerating, use of mirrors, etc., are all going to be more difficult. With this long of a trailer, you need extension mirrors if you are driving a f150 or a 1500.Not to mention it will be harder to get in and out of places. I think I would be looking for a second trailer instead of a larger one.
By the way, mentioned above, traction control in most cases just controls the slip of a wheel, not sway from side to side.. It will transfer power to the tire that is not spinning and lesson the power to the wheel that is slipping. Thus controlling traction.
I think you should look for a nice 16' trailer to start and see how it goes.