Visuo, welcome to the fourm. As trainsktg and augaug indicated, the standard fins will take quite a bit of abuse and would probably be best if you're spending a lot of time in such areas.
That said, technique and speed play a large part in what you can do with your Drive and fins. Keeping it slow and easy, here are some of the backwater haunts I occasionally take my Turbofins in:
By using a technique called fluttering, you can oscillate the fins close to the hull for shallow water pedaling. Here's a composite view from under the hull.
As you can see below, the Drive is still engaged and Turbofins are still propelling the 16' Adventure upstream using this technique (couldn't go further though)
.Eventually you will likely bend a mast or "hole" an ST or Turbofin doing this (especially if you add some speed) but repairs are simple and you can continue to employ the Drive in the meantime. Of course, you always have the option of pulling the Drive or securing the fins up against the hull and breaking out the paddle if you need to get over a difficult spot.
A couple of thoughts -- If you upgrade to ST fins, they are interchangeable with standard fins in less than 5 minutes for rugged conditions. Or, if you like the Turbos, keep one pair as a "beater" set for backwater areas. It's kind of like putting your hiking boots on for a walk in the woods.
Congratulations on your upcoming purchase!
PS: You 'll definitely want the large rudder for maximum slow speed maneuvering if you're dodging obstacles. It's not very expensive.
