We already talked some
But the best advice--Don't worry about getting plowed 90 percent of the time. Noobs will not compete with top players. It is just the way it is.
Of course we also employ a controversial policy that helps our members. We do not allow trash talking or swearing etc. in our matches.
The swearing part is a taste thing. You could just limit it to trash talking if you wanted.
The reason for this is that new players get discouraged easily. And frankly there is no reason to go on and on bashing a training clan. We already know we suck. We don't need reminders.
Some say at the competitive level trash talking helps. But good clans don't need that help against us.
Therefore those who do so, or those who reject the policy outright, go on the no-scrim list until they change their minds, if ever.
You might consider something such as this that protects your players.