I've never been to Hawks in Portland, so I would totally understand if someone accused me of not knowing what I'm talking about!!
But I have been in other bath houses, many, many times on weekday mornings. Ones that have exercise equipment might have a few guys popping in before work (or after a nightshift) to workout.
Sometimes, if it was a busy Sunday night, there might be quite a few folks still hanging around and cruising, or waking after a restful post-fuck or post-party nap.
Any of the above can be wonderful opportunities.
As for bringing a dildo... one of the first times I brought a dildo to a sex club, I got in dark but public corner, and started to sit on my moderate-to-large rubber dick. It was a Saturday night, but the place was not busy at all. And nobody seemed interested.
More recently, but many years later, I brought the same dildo to a bath house, left it in my room, walked around, and found a huge-nipped guy in the maze. He was as entranced by my moderately large nips as I was by his MONSTER nips. I think he was more of a bottom, but I wanted to get fucked, told him so, and invited him to my room.
His dick wasn't huge, but he definitely knew how to use it. He fucked me good and flooded my guts with his load, whose warmth and wetness both satisfied my hole AND left it craving more stimulation. Much more stimulation, in fact.
He rested a moment. Then he started to get up to leave, when I asked him if he would like to fist me. He said yes right away... but unfortunately I was too tight, it just wouldn't go.
So, as he again starts to move away from me, I reach over to my backpack, pull out that same dildo that had gotten me nowhere in the sex club years ago, and just swing it firmly from the backpack into his right hand, saying "Would you please try this?"
His eyes lit up - he was TOTALLY into it!!
I took several big hits of poppers as he started out gently but firmly pushing it into my hole - this dildo gets thick very quickly, just past the head, and it is pretty long too. And he wasn't into using much lube. But that didn't stop him. In fact, I quickly realized that was part of his plan - he had me on my stomach, on the bed, in a bath house cubicle, as this fuckin' hot stud man, with huge monster nips, started PILE-DRIVING my fuck hole... using pretty much only his cum as lube. I was confined by the walls of the cubicle - I could not get away from his insistent and incessant ass-assault.
He RAMMED that big long rubber dick DEEP into my hole, all the way to the hilt, over and over again, bottoming out each time. All I could do was continuously suck in more poppers as he brutally, silently, but so erotically dildo-raped my ass. Finally, after a few minutes of this, he stopped. He then took the dildo all the way out and seemed to examine it rather intently for a moment, before ramming it back in, to the hilt, bottoming out one last, but very hard, time.
He got up from the bed again, and really did leave this time, as I thanked him and lay there recovering on the bed.
A few minutes later, I had caught my breath, and cleared my head of the fog of the poppers. I started to ease the dildo out, realizing that it was almost completely dry by now - he had fucked all the cum into my hole, and the rest had been consumed by the intensely deep and hard dildo-to-ass friction.
Oh yeah, if you're wondering, that load definitely took. That beautiful monster-nipple man gave me quite a gift by which to remember him.
So, to finally finish responding to your question, yes, DO take a dildo to the bath house.
There's no guarantee you'll find the hottie of your wet dreams, especially on a Monday morning. But you just might. And HE just might give you a fucking, and a DILDO fucking, that you'll never forget!