Hi all,
I've just finished constructing a new site that has web videos of soldering techniques, including how to hand solder quad flat packs. Very handy for prototyping.
You can go and get a free membership there, which lets you see 5 videos on how to hand solder quad flat packs. Watch me hand solder a Spartan 2E in a PQ208 package onto a board:)
The upgraded membership covers lots of other soldering techniques such as "toaster-oven soldering", "frying pan solder pot soldering", etc., but if you just wanted to know how to hand solder that FPGA on your prototype, then the free membership reveals all:)
Cheers,
Tony Burch