Wow--Great score--I haven't been able to go over 120,000---what's the secret?
As you can see by the amount of times I go ( which admittedly is ridiculous ) Practice, practice, Practice. Few tips: Each screen has a bonus round.
Practice round.. earns no score .. make sure gun is working properly and where it is aiming. then sit there.. don't waste energy there.
round one: the egg toss. depending on which side you are on you get the fox on the hen house.. keep nailing him off it and you get chickens that come out at 2K and 5K while waiting for them to reload get the groundhogs on the bottom. Other person gets the barn. the barn bonus does not open right away so aim high at the trees. let the donkey get almost half way across the screen and hit him. he will turn around and run at a higher score and get him again. when the donkey in the barn opens get that and the thing above it. the barn will flip get all the mice it will flip again triggering most of the animals below to pop up at 1K each. each player in this round can get around 30K the fox person will get more
round two: Balloon Darts.. key here is team work both the white clouds have five balloons on them if you clear them at seperate times you will get yellow or blue balloons worth 500 that rain on you.. if you do team work and hit the last balloon with in seconds of each other a rainbow prop will drop in the background and rainbow colored balloons will rain down at2K each. Speed speed speed to get as many of them as you can. after that keep hitting hte 1000 point sheep in the middle of the screen and the 3 500 point sheep near the front. I do this in a circular motion and just keep working as fast as poss. high on this round is about 45K for me
round three: Plates. when this starts i hit the few plates on the bottom then get ready for the bonus 2K plates that are throw up between the two side mtns on either side. your partner and you need to hit that plate at the same time. with practice you can hit the left side then super fast to the right plate. once you hit those plates a fan of 2K plates will come up on each side. and the center mtn will go down and a tank will come up tossing 5K plates at each side. keep aiming at the center of the tank and you will hit all of them. this round is 45 - 50K also
round four: LGMs. You MUST bury the rocket in the center with rings. get all of the LGMs down at the same time first thing or it will get harder to do. with your partner both do half or one start at the top the other at the bottom. Once you do that the rocket will take off and the robot will open and you can fill his mouth with as many rings as possible. when he closes his mouth he will fake open it three times. then open it again so be ready each time the value will increase to 2K. when his mouth is closed hit the higher point targets. 5K LGM in fying saucer, rockets, and the 3 LMG in the center bottom of the screen. This round is crucial for high scores. I have seen it earn 100K. i average around 80K on this round alone.
after these rounds if I have over 200K i know I will be scoring in the 300K club.
round five: woodys round up. your last team work round. when all the targets open up there are 7 of them at 100 points. you must open all of them first then start clearing all of the targets that come out from those on a stick. do NOT hit the 500 target that will reset after you hit the 100 main target until you have cleared the external targets. if you clear the board they will all reset and pop out at 1K and 2K. clear as many of those as you can before they make you move along partners.. While moving there are a set of two 500 point targets along the bottom. if you clear both of those a 2K will pop up right after them. keep aiming along the bottom of hte screen where most of the higher end targets are.
The final bonus round. fairly simple make sure you hit both mine carts that have bullseyes on them and the 2K bat that drops down after the third mine cart . he will flip up to 5K and get him again after two more mine carts. the final bonus target is pure speed. even though your arm is tired you can still get it up to 2k points per dart. stay on your side. Good Luck toys!
Yeah I'm addicted! 
I hope my tricks will help you next time you go.
I am really bummed for the OP. I have not ridden the DCA version of TSMM yet but did ride the WDW/DHS version about 10 times. I think I would have asked (nicely, if possible 
