With large span spaces serving as an ‘interior outdoors’ for the large space habitat there would come a natural human desire to enter these spaces in some way. In a practical sense, very large span microgravity spaces have limited use. But the desire to float and fly free of constraints is a natural inclination for the space inhabitant and a key attraction of the space settlement. That there will be recreational activity in these space is a given. And, though limited largely to construction and maintenance activities, there are practical reasons for people to do work in these spaces. But with this comes a minor hazard; the potential for people to drift at slow velocity out of the reach of handholds and thus become ‘stuck’ in open space. For this reason the spans of spacecraft and space out