Oddball trick

I couldn't better 2 off for ages, then realised I was stepping too far at one point, got it.

Figure 8 III

Normally I can't solve David's levels, however I got this one relatively quickly

Directional locks: Elaboration

First set of tries I couldn't get through, this time around I got it first try, go figure.

Diagnosis

Finally beat 2off.  A nice ordering trick.

Contentment

Somehow this seems much easier than the rest of this builder's levels, relatively straight forward.

10x10 PP1 2

After a very long time I got there.  I found it very difficult to break out from the left side, once I did it flowed quite nicely.
Edit: It flows nicely if you break out a particular way, there's another way where it won't flow.

Level 2

Holes part 2

Overhand Knot

Gordian Knot

It took me quite a while to figure a route from one or other side to the opposite, once I'd done that it came together nicely.

Roskoe

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