Well, it is a new year now and the time to think about your 
upcoming tournament schedule.  Those plans might involve a 
new partner for the year.  What are some of the things you 
look for when trying to find that perfect doubles mate?  
Most players simply try to find someone that is comfortable 
playing the opposite side.  While this might solve a few 
problems and give you peace of mind by allowing you to play 
your strength, there are a few more things to think about 
when searching for a partner. 
Everyone has been in the situation before when it just didn't 
click with their partner.  No matter how many strategies, 
game plans, lessons, etc. it just wasn't going to happen.  
There are times when different playing styles and/or 
personalities just don't compliment each other on the court.  
If you are seeing no success or improvement then it might be 
time to recognize it and move on.  I think the most important 
issue with a doubles team is for the players to get along both 
on and off the court.  There will be tough times when one or 
both players just aren't playing well.  Having an understanding 
partner that will help you through these times can save a 
doubles relationship.  An example would be if you were 
struggling with a service return.  You need a partner that can 
pick you up mentally and hopefully get some returns in play 
until you get your timing back.  A partner that sees you 
struggle and then lets their own game down as a result, is not 
a good compliment for you!  It is important to pump each other 
up during the bad times and being able to give and receive 
constructive criticism is critical. 
Have you thought about playing styles?  Sometimes players with 
an aggressive style and personality match well with more 
relaxed players.  If you are a hard hitter that goes for broke 
on every shot and you have a partner with the same style, when 
you are off you are way off!  If you've ever seen two big 
hitters play as a team that lacks consistency you know what I'm 
talking about.  When they are on they are awesome but when one 
is off they are both off and couldn't beat anyone.   You might 
be the more controlled player and you need an aggressive partner 
to pump you up and to get you to go for more shots.  In a 
nutshell, style and personality matter. 
Of course, which side of the court you play counts and there are 
several theories on which player should play which side.  My 
basic rule is to play on the side on which you return well.   As 
a lefty, I was I always told I should be playing the ad court.  
During college I experimented with playing the deuce court and 
got together with a player that complimented my game very well.  
Try playing both sides with various players and see what happens. 
As a final note, give every possible partner a chance and hope 
they do the same for you.  I was very reluctant to play with my 
college partner when we first started together.  It meant I 
would have to change sides of the court for starters, which I 
wasn't open to at the time.  In addition, my new partner played 
very low as a singles player and I assumed he would be a weaker 
doubles players.  Man, was I surprised!  Once we got together as 
a team he basically carried me!  He was really a much better 
doubles player than singles player but had I not given him the 
chance we would have never formed the partnership.  It was 
ironic how I felt like I was giving 'him' a chance to play with 
'me' when it turned out that he was definitely the stronger 
doubles player and 'I' was the lucky one to be able to play with 
him.
Finding the right doubles partner can be a long process that 
should start well in advance of any major tournaments.  I would 
suggest playing as many matches as possible with as many 
potential partners as possible to get true feel for them.  This 
will also give others a chance to evaluate you and let you know 
your strengths and weaknesses as a potential partner.