Floating with an air pump, as you described, is not a safe or feasible practice. Here are a few important points to consider:
1. **Safety Concerns**: Inflating your body with an air pump could cause serious harm, including injury to your organs or even fatality. Your body isn't designed to hold extra air in this manner.
2. **Medical Risks**: There are risks of air embolism, rupture of organs, and other potentially life-threatening conditions