Of course science takes imagination but since unbelievers reject the Biblical record their imaginations about the Flood are not going to be trustworthy
Why? You mean, because we're motivated to find the holes in it? The impossibilities?
What leads you to believe that we don't approach our
own models with the same goal in mind? We're far more critical about our own theories than we are about any of your flood nonsense. Even talking about it there's a number of flood inconsistencies that we simply ignore for your benefit. That's something we could never ever get away with in regards to actual scientific theories.
It's a little frustrating how blind you seem to be to how fair we are - more than fair, the deck is stacked far in your favor. That's how accurate the scientific side is; we're more than confident that we can prevail even with one hand tied behind our backs, as it were. If you think your ideas are being raked across the coals, know that this is nothing. This isn't even a hundreth-part of the kind of antagonism entirely legitimate scientific theories are required to withstand.
If you want to see skepticism that will make your eyeballs melt, look up some of Holmes's threads where he attacks what he sees as bad science. You should be thankful that he generally opts not to get involved in these discussions; what you've experienced so far is nothing at all compared to the holes he could find in your reasoning.