Thank you guys.
Since nobody asked

- I got those windows at Habitat For Humanity at Manassas - dollar a piece - and I just took off the vinyl and framed them with 2x4s.
It was on hold for few weeks, i was waiting for a local guy to mill me more cedar boards, the idea is that cedar will keep the bugs at bay at least little bit - and the wood was free too. I like to work with cedar.
Pond rake? The write up is somewhere here on TBN. Like here:
http://www.tractorbynet.com/forums/build-yourself/105112-pond-rake.html
I welded a 3 pt adapter to accept 2x4 (piece of rectangular tubing to act as a socket) The 2x4 sits in this pocket and two steel lines go from the top of the 3pt adapter to the end of the rake. The rake I used is just welded together from pieces of rebar and piece of bed frame. I have a newer one where I used tines from lanscaping rake, but didn't assmble it yet.