I also looked for the easiest way to heat my pool two years ago. I went with solar panels and found that i could not get the warm temp my kids were looking for to enjoy the pool. I swicthedto a gas heater. I talked to a few local plumbers that would work with me. I dug my own ditch (90ft), bought the 100ft of the Yellow plastic gasline and risers from a local suppplier for $140. Bought a Pentair 100BTU for an above ground pool on-line for $800 shipped. ( I had to search many locations) . order 1 1/2 ton of sand to line the ditch and place on top of the gasline. Also had some extra coated copper wire to lay ontop of the line that the plumber apporved of. After I placed the heater and connected all the pump piping into the heater, the plumb came on-site pressure tested, and attached the gasline to the heater and housing . He charged me $275.00. Last season was the best season for the pool, and the kids used it, and the pool was opened at the begging of May (Live in Pittsburgh). Everyone will scare you about the gas cost, and I was skepitcal to, but truely It wasn't as bad as everyone makes it out to be.