A few hands to peruse:
1.
Short of a full blown relay club or strong pass, do you see any possible way of getting to 6♥ with confidence?
We sniffed at it:
1♠ - 1N (SF)
2♣ (Gazilli) - 2♦ (forced, but dubious)
3♦ (GF jump shift, i.e., overbid) - 3♥ (8-9 points, since didn't bid 2♥ over 2♣)
3♠ (patterning out) - 4♥
pass (tanked).
2.
Pard opens 1♣, 1♦ by you, 1N by pard (15-17, but doesn't deny a 4cM). Your arsenal is XYZ. Any ideas?
3.
You open 1♠, 2N on left, 3♠ by pard, pass on right. You take the push to 4♠. 4N on left, pass, 5♣ on right and you hit it. What is your lead?