I completely forgot that having a lower fstop gives more depth of field
I just did what you said and the results are much better. With this flash I can even shoot without the tripod and I'm using F32 for these shots at like iso 320 or 500.
Pics are also on my flickr, but flickr don't let me show you the high res I captured it in, so here they are posted from imgur. I'll also start putting a pin in each picture as a reference.
This first pic is of a brick, those water droplets are so small I couldn't even see them with my eyes, they are the tiny snowflakes that are immediately melting on contact with the bricks. It's strawberry floating cold today. It's blurry but I'm using a zoom lens at 70mm minimum, and it's difficult to stop my handshake in the cold.
My furry little friend:
A budding plant:
And some ice on a barrel outside in my garden: