Not great news or breackthougths, few people should find it amazing... but may be someone finds it interesting.

First I get into chat (I know some people can't, but it's really the easiest and quickest way of finding matches... and it's entertaining).

Then I use the "bblfg 'string'|'string'... " comand for the tams I want to play.

I check the Gamefinder. Some people just chat until some suitable opponent appears, but the Gamefinder lets you check wich teams are also lfg, and gives links to their rosters and coaches, quite handy.

Then I start challenging. The teams that appear below mine have higher TS, so that's were I start (I'm the challenger, and want to offer appealing games, I think it's polite). I preffer to challenge withing 10TS untill high TR, and avoid handicaps.

I don't make great differences on races, CR or the like (with bashers I just challenge anithing with higher TS just in case they accept). At high TR with elves I used to check CR and challenge only coaches with 150+ and some matches played.

If I get challenged I just use to accept as long as the match doesn't look too biased (I don't like bashers that challenge shoft, lower TS teams, but I just supose they don't find opponents).

Resume:
Use the Chat if you can (it's quicker and easier)
Use the Gamefinder as a guide (it's automated)
Try to challenge higher TS teams (you are a brave coach, looking for a challenging match)
Play a variety of races and coaches (the full game is more fun)
Accept fair offers (as long as you don't end up playing only Orcs, it's fun)

Note: sorry about my poor spelling.