I've recently come across a company called Assure (www.assure.co) that provides SPV formation, administration, accounting, etc. in one easy, neat package (supposedly). They can spin up SPVs on demand for you in less than a week. It may be of obvious interest to both searchers and search investors, especially if the process is as smooth as advertised.
Not sure if anybody here has used it already, but I would be interested in your experience if you have.
They are also doing a series of webinars today and tomorrow with helpful basics and advanced topics on things like structuring, taxes, regulatory reporting, etc. that may be helpful. I listened to one of them today and found it to be pretty helpful. Replays available on their website.