Surely your architect plans stipulate size of beams needed?
Pool nets are a good and not so ugly. Here's some information http://www.andalucia-for-holidays.com/aquanets---pool-safety-nets.html
Rachel
I would have thought La Alpujarra would be a good place to start, between the ski slopes of the Sierra Nevada and the Costa Tropical at Almuñecar.
I too own a holiday home inland and always reply to emails within 24 hours usually a lot less. It can be very frustrating answering enquiries and never hearing again but when I look to rent somewhere I always choose 2 or 3, maybe more and probably email at least 3 so why should I expect my potential customers to do otherwise?
www.andalucia-for-holidays.com/Casa-Rural-El-Reguelo.html
My understanding is that you can register as a part-time resident. The town hall get allocated their share of government funds depending on the number of residents and part-time residents so if you're not registered your local town is missing out.