Option A: Squat from the bottom up, so the pins/whatever you are squatting from is at parallel. This will build great strength, but forces you to work from the weakest position, so you will get stronger as you work through the range of motion. I train alone, and squat from a pair of old scaffold trellises, that are adjustable. I set them just below parallel, and squat up. If I fail at any point, they are set in bottom position, and would catch the weight.
Option B: Work with higher reps/slightly lower weight. Squats respond really well to high reps, up to 20 reps. You'd still see great strength and size gains.
Option B: Work with higher reps/slightly lower weight. Squats respond really well to high reps, up to 20 reps. You'd still see great strength and size gains.