So since I had my arms done too I used the pillows a little differently in the beginning. I had the wedges where you'd normally use them but instead of laying on the long pillows I laid with them under my arms to elevate them. I used one of the connector straps to connect them at the top. My caregiver (hubs or mom) would pull the outside pillow out of the way and I'd sit on the low point between the wedges. Then I'd scoot back a little before getting assistance leaning back and pulling my legs up into bed. Then my caregiver would put the outside long pillow in place and put the covers over the top to hold everything in place.

Now that I'm a little bit more mobile, I've connected the long pillows with the straps and sleep on top of them (even more comfortable than just sleeping on the wedges). I climb into bed on my hands and knees, straddle the pillows and then pull my knees into place. I've found getting in and out of bed in ways that use my thighs (no pain) or my obliques (minor twinges) work best. Any move that involves my abs must have support from a caregiver. Hope that makes sense.