This is the strategy I use in dynomite for 2 person games, especially for ladder competitions.
When you join the dynomite ladder at worldwinner, you'll find a ton of players who have top scores less than 70k. My experience suggests these players rarely score over 60k. If you can consistently score more than 60k you will win often and with minimal risk.
If you've watched existing video's for dynomite, the strategy to score big is to use bankshots far up one side of the screen to remove eggs that are off the screen. Eventually you may achieve a 'big drop' hopefully including 3 or more 2x multipliers. If you are able to accomplish this you will be rewarded with a big score probably > 100k. From my experience you will not achieve this more than 50% of the time tho and when you don't you'll score like 20k. Also sometimes you'll get the 'big drop' but you'll only get 2 2x multipliers and you might score only 50k or so. When you only have 1 shot to play a competition, this is a very risky strategy to employ!
So being really cheap and hating to lose money, I crafted a less ambitous strategy to score > 60k almost every time.
So what I do is use the bankshot technique, but don't play off the screen. If you don't play off the screen you'll know what color egg you need to make the next match so you'll use less time. You should also be able to get at least 2 2x multipliers in your 'big drop'. Choose the side you are banking off wisely at the beginning of the game! Once you get your first 'big drop' choose a side again and go for a second 'big drop'. Once you get the second, finish the level fast! And finally since you are playing on the screen you don't have to worry as much about the evil black eggs blocking your paths. I think those black eggs are the biggest obstacle to getting a 'big drop' when playing off the screen.
So pretty much if you can execute this strategy, your 2 'big drops' will score you about 20k each. And when you complete the level you'll get another 20k or so in time/shot bonus. So you are right at 60k. If you are lucky to get an extra 2x multiplier in the 'big drop' you'll score even better.
Here's a link to a video demonstration of the technique.
YouTube - dynomite with 2 drops at worldwinner
Some additional tips:
In the video, my starting setup wasn't ideal, so I cleared a few rows to lower the 2 2x multipliers down to make them easier to get. By doing this I almost wasn't able to get the 2nd 'big drop'. I was pretty lucky that for the 2nd drop I had a long line of blues to hit that would trigger the big drop. If I was greedy I probably could have left a 3rd 2x multiplier on the screen, but played it safe and cleared it to make the bankshot easier.
Sometimes the 2x multipliers will be in the center of the screen. You can work bank shots on both sides of the screen to make a diamond shape in the center with the 2x's and get a big drop that way.
Be really careful that when you go for the big drop that you won't accidentally hit one of the 2x's with your bank shot! If you do that your scoring potential goes down considerably.
Sometimes you might have to play off the screen a bit. Consider eliminating some lines at the bottom of the screen if that doesn't nuke a 2x multiplier & maybe you won't have to play off the screen.
The black eggs can still hose you if they block your path. Try and avoid having to deal with them by working the opposite side if possible. If you must deal with them be sure you won't nuke a 2x multiplier in clearing the black egg out of the way.
Hope this helps and any questions or constructive criticism is welcome!
don