The Take it for a Ride sex position is friendly to penetrating partners of limited mobility. As the position can support the entirety of the body weight if the penetrating partner lays back fully on a large couch, this can allow those with limited leg mobility to achieve this position. Couches with a chaise component will make this even more mobility-friendly.
Shallower couches can be harder to contend with for people with limited mobility, especially if the lack of support under their lower half is the issue. Turning more of your body onto the couch or moving the Take it for a Ride position to a bed or the floor can help with that.
Make sure to maintain open communication throughout the entire session to ensure everyone is comfortable. Talk about pain, disability and discomfort before, during and after. If your couch is plushy, being snuggled deep into the cushions can get stiflingly hot. Depending on how the receiving partner is holding their balance, this position may also start to strain the penetrating partner's knees. If, at any time, you want to swap to a new position, all of these couch sex positions are fantastic.
As the Take it for a Ride sex position can leave bother partners hands-free, this is also a fabulous position for adding sex toys. The Bump’n Joystick would be a perfect 'cumpanion' here. Both partners have access to each other's genitals during this position, making it easy to add in a vibrator or penis-stroker.
This sex position can also be a great fit for watching erotic material together. As couches tend to reside near TVs to begin with, it would be easy to pop in some erotic movies.