Richie, if your irons are 4 degrees flat, they CAN'T POSSIBLY be dynamically fit, huh?
conkanen, you need to hit balls on a lie board & check it with the "marked ball" test.
BEND THEM TO FIT DYNAMICALLY!!!!!!
I think there's a lot more factors than dynamically fitting a club, especially if you want to put the work into developing your swing. And believe me, I've probably been thru more various fitting techniques and wide ranging fitting standards than anybody on this board. Currently I play clubs that are 6* flat. However, I've been fitted for clubs that were 5* upright. I was also fitted for clubs that were 1* upright, but +1" longer shafts.
The current clubs I had bent 6* flat in part because I wanted to flatten out my downswing. I think that I'm like a lot of golfers in that I tend to adjust to the lie angle after awhile and it did achieve my goal of flattening out my downswing and I hit the ball quite well in the process.
But, I recently changed my posture at address and made some tweaks to my downswing and I think I'm about 1-2* too flat for me now. That would still put me about 4-5* flat from standard. But the swing looks fine, I'm just off a hair.
I think one needs to figure out what type of downswing plane they are on, the dimensions of their body (height, arm length, length of the legs, etc), their height at their desired address position, and in general...what their desired swing is like. I think dynamically fitting a golfer just fits them for their current swing, which may have some kinks in it that they may want to get fixed in the future.
So....let's say you have some kinks in your swing where you are dynamically fitted for clubs that are 2* upright. Then when you try and work on your swing, you now have to fight those 2* upright lie angles.
I also wouldn't bother with a lie board if my life depended on it. The marker line test is excellent though.
And I also think it's a good argument for forged clubs, so you can easily bend the lie angles whenever some changes are being made.
I don't know conkanen's goals as a golfer, but if he's willing to put the work in to improve his swing, I would recommend that he bend them to about standard and find the right instuctor to help him figure out what his swing issues are. THEN, when those swing issues are resolved, get dynamically fit for the lie angles, except junk the lie board.
3JACK