Nature's Minne & Palisade
Either have them on <mo> or <tt> (or both). I much prefer <mo>.

If you're new to Bard and can't keep track of your dots, a macro counting dots will help.
/micon "Iron Jaws"
/ac "Iron Jaws"
/ac "Iron Jaws"
/wait 22
/echo <se.2>
Dots are 30s each. This macro will make a sound when there is 8s~7s left on your dots to remind that you need to refresh them soon. You can increase or reduce the time as you see fit. Remove this macro once you're confident enough.

I do not recommend using any other macros.