Another option along with building sound movement patterns through exercises mentioned above (overhead squat, single leg squat, single leg romanian deadlift, hip thrusts) would be to perform isometric deadlifts at different angles with whatever you can find to grip on to or use a strap. Rosstraining talks about building a contraption for this very purpose. The 12lb weights won’t be very effective for building a bilateral deadlift. I found this post from reddit.
"Homemade Isometric Tool - RossTraining.com
Posting a link to Ross Enamait because he shows some good variations and setup, and his book is where I first learned about isometrics.
For maximal strength, 3-6 second holds are best. Longer than that, and you are training to be slow. The body cannot produce maximal force for a long time (you cannot sprint at top speed for 60 seconds). However, for hypertrophy, I wonder if the decreasing force over the duration of a longer hold would essentially make it a continuous drop set.
Static-dynamic protocol: this comes from Siff and Verkhoshansky’s Supertraining (and discussed in Enamait) and it’s a good way to increase explosive power. Do an isometric hold for 3-6 seconds and immediately follow up with fast movements through the same joint angle. So something like doing a static deadlift hold toward the top of the pull, followed by vertical jumps. There is an after-effect following static tension that allows an increase in the effectiveness of dynamic work. In short, you jump higher after doing an isometric deadlift.
Deadlifts also used to be my favorite exercise. Isometric deadlifts are not nearly as fun. But throwing in some jumping makes them ok."