my mastertow dolly also has a locking hitch pin, heavy safety chains for the hitch, heavy safety chains from the dolly to the front part of the car frame. i also have the magnetic lights that run back over the car to the trunk. you do have brakes on the dolly dont you?
I used a Demco Kar Kaddy for 25 years, previously, I now tow 4 downs. I used the safety chains attached from the dolly to the frame with S hooks. Then the fabric Tie down straps. I inserted a trailer pin the the ratch to keep it from accidentally slipping. Never ever had a problem.
When I first started using the dolly I strapped the toad down as Demco recommended by pulled the toad all the way forward to the front wheel stop but I found that the straps came loose & I even had one strap come all of the way off. I then realized that the straps won’t slide over the wheels as they are tightened so they remain a little loose behind the wheels and when you started pulling the Toad it slips back leaving the straps loose on both sides of the wheel.
With this in mind, I now pull the toad all of the way forward then back about an inch, strap it down until the tires squish. As the straps tighten the wheels is allowed to roll forward and the strap tension equalizes on both sides of the wheel. Since I started doing this (over 34,000 miles ago) I’ve never found a strap loose enough to cause a problem. I still check them within 50 miles of start and again each time I stop (about every 2 to 3 hours).
There should also be chains to hook unto the toad and chains to hook to the motorhome (remember to criss the onesa to the motorhome).
1. If your dolly is a little wider than the RV watch those right curbs when parking. I ground the lettering off of the right dolly tire before I realized this.
2. Make sure that you allow plenty of front end room when parking along a curb. If you have to turn too sharply when pulling out the rear of the RV swings in the opposite direction pulling the dolly into the curb causing the dolly wheels to scrap or roll over the curb.
Good luck & safe traveling.
Plus New Brunswick, Prince Edward Island & Nova Scotia