Bed Cradle or Bed Bar. Particularly in winter can't stand weight of covers on leg. Found a bed cradle online which lifts just a small area of bedding up, put it in the garage last spring and mysteriously disappeared when my son cleaned up the garage. This winter bought a bed bar again online that lifts bedding entire width of bed. Used a heating pad to warm up the air in the space below the bar.
Thanks for all the other tips.