What modifications or variations of the single-leg deadlift that I can try?

There are several useful variations and modifications you can try for the single-leg deadlift to target different aspects or accommodate your fitness level.

Here are some options to consider:

1. Eccentric Focus Deadlift:
   Emphasize the eccentric (lowering) portion of the lift by taking 3-5 seconds to lower the weight. This challenges stability and muscle control.

2. Reverse Lunge with Deadlift:
   Perform a reverse lunge first, then hinge at the hips to lower the weight, keeping the front leg elevated.

3. Deficit Single-Leg Deadlift:
   Stand on a small platform or block to increase the range of motion and challenge mobility.

4. Landmine Single-Leg Deadlift:
   Use a landmine attachment to grip the weight, which can be easier to balance.

5. Banded Single-Leg Deadlift:
   Loop a resistance band around your hips or thighs to provide extra stability and tension.

6. Dumbbell Alternating Deadlift:
   Alternate lifting a dumbbell with each leg, keeping the non-working leg planted.

7. Kettlebell Rack Single-Leg Deadlift:
   Hold the kettlebell in a racked position close to your chest for added balance challenge.

8. Isometric Hold Deadlift:
   Hold the bottom position of the deadlift for 2-3 seconds to work on stability.

9. Deadlift with Reach:
   As you lower the weight, reach the non-working arm toward the floor for an extra balance challenge.

Start with the basic version first, then experiment with these variations to keep progressing and targeting different aspects of strength and stability. Remember to maintain proper form and control throughout.