Howdy Ky,
Tronman's suggested design sounds good to me. (I have made about eight bows with dimensions similar to those provided by Troman.)
Heat treating, flipping the tips, or backing the bow is not necessary. But, if you want to give these things a try - then go for it. However, be sure to apply the backing after you're done heating the bow.
Pictures, (even of boards), are always welcomed and are usually helpful.
How big is your board? Can you make more than one bow from it? If so, perhaps you could make two bows from the same board, with the same dimensions and poundage, and then heat treat, flip, and back only one of the two bows, so you can do a side-by-side comparison of efficiency / cast. You could also draw up an F/D curve for each bow for comparison.
Any way, Best of Luck to you,
Canoe