@kvphoto That's v kind of you! I started out with an IR filter and my usual guess and press methodology. It worked to a certain extent but after you've focussed you need to add the filter and I usually managed to nudge the focus out a bit (or a lot!) putting the filter on. I looked into IR cameras and got mine from Ebay, secondhand converted, really cheaply. It's a v basic D50 but came with instructions and preset WB. Can look up seller if you are interested.
@fbailey thanks so much for the feedback on the filter & camera... at this point I guess I'll keep playing around with post processing... I may be interested in an IR camera in the future... don't think I want to mess around with the IR filter.
@merrelyn @jgpittenger @thewatersphotos @craftymeg thanks so much for your kind words/comments.