I know you said you spent around $500 on supplies. Mind sharing the break down on on that?
Approximately (you can find the exact prices on their website):
2 gallons of colored gelcoat = $100 x 2 (I believe that included the MEKP)
1 gallon of Duratec = $120
1 quart styrene wax = $30
1 gel cup gun = $140
1 spray suit = $15
1 package of 25 paper cups = $18
1 mekp measuring bottle = $5
shipping = $60
I think that adds up around $600 then take off my 20%.
I see you built a spray booth. I would really like to see more pictures and detail of that.
Spray booth is really really easy. I have a really massive tarp that I picked up somewhere and it's probably about 15x 25ft. I nailed it to my rafters with the grommets. Where the grommet didn't line up with the rafter I used some string to tie it off. That was one side.
From there I had some clear plastic that I used when we painted the house. It was probably about 12 x 30 ft. I folded over the top edge so I would have three layers of the material about an inch wide and then took out the staple gun and stapled it to my rafters following the beams as much as possible. From there I ran out of full sized plastic that would hang to the floor and I had to tape together two smaller sections of leftover painting tarps to get coverage. Still doesn't quite reach the floor but I'm ok with that. I am also going to lay down tarp all over the floor to cover the entire floor.
I think you can see how the boat is hanging. I just passed some rope through the bolt hole and hung it from the rafters. I set it up with some carabiners and some 3:1 systems so I can raise and lower it if necessary. That has been handy in being able to properly sand the deck and the very bottom of the boat without me crouching over for an hour and killing my back. I'm an old climber so I have lots of that stuff lying around and I enjoy nothing more than setting up intricate rigging systems.
For ventilation I have two shop vacs with a 2 1/2" hose connected to a 1 1/2" x 10 ' PVC tube for each. I cut the PVC tube and installed 3 tees throughout the length and 2 90 degree bends at the end. I installed those hanging above the boat. I had to tape off about half way the T's closest to the shop vacs so that the shop vac was still pulling air at the end of the long tube. I then just connected the shop vac tube to the end of the PVC with some duct tape.
Check this guy out:http://www.instructables.com/id/DIY-Shop-Vac-Dust-Collector/
That's where I got the idea when I was setting up my wood working tools and just adapted the idea for this. You obviously don't need the vortex to collect particles as we are mostly worried about fumes.
I will also have two circular fans circulating air. The spray booth actually has a door at the stern of the boat which will be partially open and where the shop vacs will be venting their air. The garage also has a fan to blow fresh air into the garage (well once I reverse it it will). It's really that simple. It may sound complicated but once you get the parts in your hand and realize what it is you are trying to accomplish you should be able to figure it out.
It helps that I have tons of rope of various widths to use to hang stuff with and a bare garage of which my wife doesn't care what happens in there. I also have various cutting tools to cut the PVC with. Worst case is you just go at with a hacksaw. Most of these materials are fairly cheap I think, although I had almost all of it lying around from previous projects.