I was looking at the SolarPro coiled dome heaters.
http://www.doheny.com/poolsupplies/Sola ... aters.html
I was thinking that in order to get a little more heat into my pool, i would get 2 or 3 of these and plumb them in series and then connect them to my return. I could mount them on a plywood board and then only put them out when people are not coming around and disconnect them and put them in my shed. I was looking at the large ones which have 66' of coiled pipe inside. Would 3 of these actually do anything in a 16x32 IG pool with a solar cover on it? I was thinking that if they could raise the temperate just a few degrees, the initial cash outlay is not that bad. If it looks like they may only do 1 degree, they would be pointless.
Another option would be one of these done in the same fashion. Maybe i could get two, but I have a feeling moving them around frequently would be a big no no:
http://www.doheny.com/poolsupplies/Sola ... anels.html
Just to be more clear, my main goal with these heaters is something I can put up and take down frequently as I feel i will be using them during the week when no one is using the pool and then putting them away on the weekends. I have a fairly large shed (10x14) so I would like to store them in there or even behind the shed if I can. So weight and size are important. I understand that LARGE heaters are needed for pools, but I just want to add whatever I can to extend the season as much as I can.
I read a post where and individual made 4 5' round collectors with 250' of 1/2" flexible black (irrigation) pipe. His post stated he added 25* to his pool with them, but he was in arizona. I would like to make something similar, but maybe just smaller and less cumbersome.
At some point in the future, I would like to add some panels to the roof, but I do not want to do that until I get a new roof put on the house (less than 10 years) and also get solar hot water heating for the house which will require 3 or 4 smaller collectors. I have ideal sun exposure on my roof and my back yard is pretty ideal as well. I am planning on putting these on the patio on the far side of the pool. It is only a 5' wide patio at that point with gardens all around it so I really dont have much space to work with.