You don't need the depth wheel or the weight if the plow is set right. The plow needs to have a good point and a sharp coulter to work right. Page 4 of this brinly manual
www.brinly.com/graphics/manuals/PP_51BH.pdf
have needed information on how to set the hitch.
Pre plowing setup:
The moldboard needs to have rust and paint removed from it. A wire brush or a sanding flap disc works good on the moldboard. The plow needs to be parallel with the tractor. I like to use the left adjusting bolt on the sleeve hitch to keep the plow from swinging to much to the left.
With the tractor sitting on level surface I like to have aound a 1 inch gap between the floor and the back bottom edge of the landslide.
I like to have some float in the lift arms. I do not plow with all the way down. The stop is removed from my Cub Cadet. I wll place a piece of tape on the trans tunnel to show me how deep my plow will go on flat soil.
First couple passes
On the first pass I do not do any adjusting because the furrow side of the tractor is 4-5 inches higher than normal plowing. Your tail slide angle is off too. On the second pass I like to plow 4-6 feet and stop the tractor and take a close look at the landslide gap. I try to have 1/2 to 3/4 inch gap between the bottom of the landslide and the furrow floor. Ajust the tailslide untill you have the correct gap. A no gap condiation will cause the plow not go into/hard to go into the soil. Any soil build up needs to be cleaned often so the moldboard will shine up. The better the shine-the easier the plow will pull.
Dual wheel
I've ran a dual on my IH Cub Cadet 149. The dual may be off the surface a little.......you can tell when it is digging into the soil. 23-8.50-12 and 6-12 ags are good tires sizes to run a dual. Anything bigger and they are worthless. Max tire width:
8 inch wide plow-use a 23-8.50-12 or a 6-12 tire
10 inch wide plow-use a 23-8.50-12 or a 6-12 tire
12 inch plow 23-10.50-12 or 26-12-12 tire
I started out with 23-10.50-12 ags on my IH Cub Cadet 149 with a 10 inch plow. I kept breaking pins in the driveshaft (correct pin) . It got to the point where I cound replace a pin and be plowing in less than 8 minutes (someone timed me). I went to 23-8.50-12 ags with a dual and have not broken a pin since. That was 7 years ago. I notice the 23-10.50-12 did not set right in the furrow. The furrow tie was running on plowed soil from the round before. My 149-plow hit a hard spot-spinning tire dug inand hit the hard furrow floor. There was enough shock to the driveline to break the pin in the driveshaft.
Plowing speed plays an impotant part in keeping the plow in the ground. The plow speed should be around 3 mph to get the best results.
I have been plowing with IH Cub Cadets since I was 10 years old. That was 45 years ago. I am still learning.