What are some good ways of completing the game?

Okay the easiest way to finish the game completely as I have is this:
1.Do 1 girl at a time.They get jealous if you gift other girls.
2.Remember that nothing in the game is 100% guaranteed to work.The trick I'm going to tell you works about 90% of the time if you do it correctly.
3. USE THE RULE OF 4 GLITCH! This will get you a lot of the swimsuits the girls dislike and hate.
This is how it works:
First raise the target girls emotion to where she would partner with you.(I will use Lisa and Ayane as my example).For this example as Lisa I raise Ayane's emotion to where she'd partner with me if I asked.(For the glitch to work you don't have to follow the specific rules for Helena, Ayane, and Tina.)
I give Ayane the "Venus" swimsuit.
I go to check "exhibition" mode to see if she accepts it.(This will still allow the glitch to work)
If she accepts then wonderful(don't expect this to happen too often).But for this example she throws Venus away.Gift Ayane back up to +2 music notes.Then give it to her again.Repeat this until she throws that swimsuit away 4 times BEFORE DAY 13(if you don't the glitch probably won't work).When she does this play the day out but avoid Ayane as this may mess it up(it did to me).Go to the hotel and select "Leave tomorrow'.Play as Ayane and give Lisa like and love items and she will most likely send you the Venus.If she sends you items and accesories that's okay as long as you get a swimsuit gift.(You'll usually get the suit as the very first gift but you can still get it if it isn't.)
Now should Ayane take the swimsuit on the 2-last try start another swimsuit and try to get her to trash it as much as you can before day 13(vacations DO NOT CARRY OVER SO THIS IS FINE).Reverse the pairing and you may get it back.The chances are lower but still the more suits you get the better.
Now you will need money eventually.So partner with the girl you wanna spring the suit on and give her love items and play volleyball with her but remember to follow any character specific rules.Drop the suit on her on Day 13 and pray.She accepts it thank a holy figure.She tosses it reverse the pairing and try to get the swimsuit back anyway.In my experience, this works about 30% or less most of the time and usually works best on hate suits for some reason.
This is the best time as the character your trying to finish to buy accesories and items, so you may want to partner with the girl your trying to recieve the suit from.I'd just buy that stuff between getting suits and at the worst buy them once you have all the swimsuits.
Now if you can't find a certain swimsuit in the sports shop just move to the next one you can find.Also finishing one "rival" character will make the other less responsive.This is for Kasumi and Ayane and Helena and Christie.I found that Kasumi and Christie(who I did 6th and last respectively)were less receptive to my attempts than Helena and Ayane(who I did 3rd and 4th).
If you have any questions, post back
------Kokorolookalike/JOHNCENALOVER77