Jeff_G, Good you have the time to baby some grass seedlings. It's getting close to warm enough here in Texas to seed Bermuda. Night-time temps need to stay at 60 degrees & above for it to grow. Like already said, a slight amount of raking(like a small harrow behind a four wheeler) to break up the crust. Then use Common Bermuda seed at 3-4x whats recommended. The key is to plant the seed a no deeper than 1/4 inch. I typically just lightly hand rake. Then water. Seed germinates in 5-7 days. Water lightly and frequently. Looking at your pictures, you may need some erosion control. See if you can find some old hay square bales & situate them to minimize runoff. Some rebar makes good stakes..Good luck..du