Been having some amazing results using this tactics having move up from League Two to Championshid in 2 seasons and now fighting for promotion to the Premier League, all of this managing Morecambe.
I was not making much success at first but i change the Shield Wall V1 tactic from attacking to Cautios and since then my team is playing very well.
I most often use the Shield Wall tactic as my team is always the underdog, using Conqueror when i am the strongest team or the chances are even.
I've won League Two, League One, Checkatrade Trophie and made to FA Cup semifinals losing against Man Utd 3-2.
For now, having this combination of attack duties mixed with a cautios mindset have been working great for me.
Good info on the Shield Wall tweak, will be trying it tonight with Shield Wall v2