Yep, I actually ordered a graduated ND filter specifically for sunsets. Aaaannnddd it's not going to get here before my trip, they took too long to ship it. :| So it looks like I'm going to get to buy one locally last-minute and have two, lol.
And nope, this is 0.6 seconds at f/22! I have one at 2.5 seconds at f/22 and it's CRAZY blown out. Like if you take the exposure 100% of the way down in camera RAW, 3/4 of the sky is solid or patchy blown-out white. I assumed 2.5s or so would be adequate (was playing around in manual/guessing) and saw it and was surprised and just kept inching my shutter speed up until I got one with an exposure I was happy with. Here's the histogram:
Mirror lock up = I don't think the K-r has this, it DOES have a 3s delay option which I could use (but didn't because I'm stupid and I was rushing and my remote was acting up >___< I think the battery is dying, gotta get a new one before I leave). Tripod was secure, it WAS a bit windy but that shouldn't affect things like the boats stacked on the dock (the ENTIRE image, even totally stable features, looked a bit blurry to me :|). It might've been a bit of camera shake, I'll try the delay next time.
+ It's actually not cropped at all - I was going by the rule of thirds (+had the divider lines on my live view) so peerrrrsonally I wouldn't want to crop any sky unless I could get 2/3 water, which I couldn't here because of the bridge railing ;P I might try a different angle sometime when I have the forethought to park at the actual park near the lake and walk down and poke around well BEFORE sunset, lol.
Thank you for the input!!!
edit: (And thank you, Mr. Bassie!!)