i take it you have tried Heavy Duty & if so how long did you train Heavy Duty?
be a bit more specific in your answer.
I trained both HD and Dinosaur Training. It is very hard on recovery. I trained in my garage and would do this for legs:
The max my leg extension could hold was 225lbs. I set this up and then set up a pair of sawhorses as safeties for the squat.
I did 100 reps with the 225 and then went to the stands my late brother made for me where 350lbs to 400lbs was on the bar and no rest I could usually get 15 to 22 or so reps. After returnin the weight to the stands I lay on the floor for an indeterminate amount of time. I would not train again for approximately 2 weeks (more or less).
For back I would do 300+ pounds (my son would stand atop the weight stack on my standalone lat machine) close grip palms up pulldowns to failure which was usually 5 to 8 reps followed immediately by barbel rows with maybe 150lbs to failure. That was it.
Chest was done with a 2.5" barbell and 225lbs (more or less depending upon me) and 80lb DBs. Flys were done to failure which was 10 t 20 reps followed immediately by the bench press with the sawhorses to protect me and they were done to failure which was anywhere between 3 and 10 reps.
Biceps were not done bhanky-poo style. The same thick bar was used in a progressive manner with weight going from 80lbs to 120lbs for reps between 5 and 1. 5 sets.
Triceps used the same thick bar and I did bottom position (off the sawhorses) with 200lbs for 5 sets of 1 to 5 reps.
Sit ups I did in Roman Chair fashion with my son placing 200lbs. on my chest and reps were 5 to12 (maybe) for 5 sets.
Shoulders were done with 50lb DBs for standing laterals to failure (2" handles) followed immediately by using the thick barbel to clean and press up to approx. 185lbs for 1 to 5 reps. Some days I used the 2' DBs to just do presses with 80lbs. for 5 sets of up to 5 or (barely more!) repsl
Each session lasted a maximum of 30 or so minutes and required that I rest from up to 2 weeks to recover. I did this for a maybe 2 years and this was over 20 years ago that I put this much effort into this style of training. It is HARD on your body and mind.
I decided that I just could not do this style anymore. It was very hard to recover from. I was not injured by the training but my problem came work related or "retard" related injuries in the world outside my gym.
I do not recommend training like this. Training like this naturally is doubtless far more difficult that with steroids and believe me, I was jealous of my friends that took the stuff because I was beat and while I was stronger than them on some lifts they were plenty powerful and looked a whole lot better than me. They were in the gym much longer than me but I was recovering a LOT longer than they were.
I usually weighed in at around 240lbs. back then.