Today two friends and I played your game for about an hour and we enjoyed it. Nice work. However, we did have a few suggestions for improvement, that I wanted to mention. Maybe you are interested to hear?
(1) the player can turn off the music in the game, which we did, because we wanted to concentrate on the gameplay. But strangely, when music is turned off, also no soundeffects could be heard, which however, we would actually have expected, because in alot other C64 games, it's handled in a way, that, either SFX or music can be selected. But "Hot Shot Pool" sadly has no SFX at all so far, it seems and this is a bit strange while playing, when you hit the ball and when it strikes other balls and you hear absolutely nothing. It feels unnatural. SFX would create a much better atmosphere while playing, maybe you could add some?
(2) the power-meter fills up very quickly. All three of us felt, this is too fast, making it difficult, to precisely control the power, used to hit a ball, in certain game situations.
(3) that aiming-line, shown when hitting the ball, isn't bad, but a perfectly straight line, would sometimes be more helpful, for judging exactly, where the played ball will strike next and how other balls will likely bounce off then. Would it be possible, to add a new funtion in the "options" menu of the game, to switch between that current aiming-line and a perfectly straight line? That way, players could choose, which type of aiming-line they prefer to use and I guess, that alot players will also choose a straight line here.
Besides that, it's already a good game, that makes fun. This isn't meant as criticism, just suggestions for improvement, since we’ve played a lot of pool games, especially on the Amiga-500 back then. But there are also a few good ones on the C64. Cheers.