Just received my Deluxe AeroCreeper and love it! However, I felt it necessary to make two modifications: 1) At 6'3", the headrest is perfect at its highest point, so I used the existing crews on the back to hold it in position (future adjustments not necessary); and 2) This piece of equipment is relatively heavy, but (more importantly) awkward to transport because of its tendency to want to unfold. So, I purchased a 34-inch ($6) rubber tarp strap (reworked the hooks a tad) and now I can carry my AeroCreeper just by grabbing the sidebar (like a briefcase). If I was a clever engineer with a fancy 3D printer, I'd design two heavy-duty clips (one for each side) that could snap into place to accomplish the same results. Bottom line, though, you'll be glad you bought an AeroCreeper instead of a cheeper knock-off.