I've got a working game! Of course, it falls far short of what I'd like it to be in many areas (graphics, sound, various mechanics...), but it's completely playable (for its one extremely simple hole) and gives you a score and everything. I did take the time to add a few UI enhancements - e.g. the charges now show how big the explosion will be (both in the caddy and when placed), which makes it much more playable.
For now, I give you Explosion Golf v .01b.
I think tomorrow I'll try to add a couple of sand traps and then make the terrain affect movement and ball bounce.
Time spent this evening: 3.5 hours
Time remaining: 1.5 hours