Yeah, the bomb slot is very random, but I'd say if I keep attacking it, I'll get in roughly once every 20 minutes.
I did have a bad Vent Shaft on my SS run. Although it is a difficult trick, you can become much more consistent at it than that. However, it is one of the tougher moves in the game, and you cannot get good at it without a lot of practice.
Geo Core really is random, and it went extremely well on my run. Getting in the bomb slot in 3-4 minutes is a true gift. As I said, on average, I'll have to play for 20 minutes to get in (it can take over an hour at times), so you really can't expect any tips for this, except be patient!
I did have a bad Vent Shaft on my SS run. Although it is a difficult trick, you can become much more consistent at it than that. However, it is one of the tougher moves in the game, and you cannot get good at it without a lot of practice.
Geo Core really is random, and it went extremely well on my run. Getting in the bomb slot in 3-4 minutes is a true gift. As I said, on average, I'll have to play for 20 minutes to get in (it can take over an hour at times), so you really can't expect any tips for this, except be patient!