Yeah i looked at a BA but in the end couldn't part with 10k, I did a bit of recon back in December and spent 3 days in brisbane driving around - literally 8 hours in a car getting to know all the areas I had investigated; started with a list of 20 and narrowed down. I think you need to see the areas yourself if you are not going to use a BA it certainly helped me.
Yes I use a PM from Pure Rentals (PM me for his contacts - he is fantastic!). The idea is that he will try and conjunct on the property he inspects for you with the selling agent and thus that pays for his time, we couldn't do that with mine as it had only just gone on, so instead I am just going to give him some cash as a good will gesture.
He inspected 20 odd properties and phoned me whilst onsite, his ethos was always with my best interests in mind, i.e. if it was his money would he buy it. He could have easily sold me a lemon early on and I wouldn't have been any the wiser.
In terms of finding a PM to do this I just gave a few a call explained my situation being interstate, offered some extra cash and to put the property through them once i'd found it if they did some inspections and that was it - saved myself 10k. Then i just kept alerts on RE and the moment something came on sent him the link to go check it out. Worked out pretty well. HTH