Do not clog on purpose
We will decide which is on purpose and what isn't.
As to get a feel to what we mean, I'll post my suggestion in that topic:
1) Don't sell any tower-value more than 50g, unless you are building a stronger tower for it
2) Don't clog intentionally more than normal yolo would do
3) Don't clog more than 1 round [in a row], unless the opponents sent on the 2nd round
Those were meant until 7, as the skill-less clog-mid strategy was taken over, but this can be widend out if necessary. So, do _NOT_ sell towers for the sole purpose of upgrading lumberjack (unless it is like a t1/t2 unit) or just clogging the hell out of it etc.
Also don't stay low value to begin with in order to trick the "no-sell" rule as this would be against 2). I mean we don't care if e.g. an archer-player stays 2 elite and 3 small ones for 7, you don't need to up a 3rd elite. But don't stay 2 elite with 0 small ones and call that not violating 2).
Just rough examples.