Hal,

Our pool was constructed with an entry ramp at the shallow end that starts in the middle of the shallow end, goes down slightly to one side of the pool, then continues to ramp down the side towards the deep end. My wife had polio as a child so has one leg shorter than the other and with an unstable foot so using a ramp instead of stairs is much easier for her. This ramp can also be used for wheelchair access, though there is currently a drop of a few inches from the edge of the pool to the start of the ramp.

I've seen some pools that have beach-like entries and those would clearly be easier for wheelchair access.

However, I do not have any experience with a lift chair. Hopefully, someone with experience with that sort of option will chime in.

Richard