I observed this one and others in the region tonight. For various reasons I got started late and was observing the galaxies skirting down the side of a tall pine as they set lower. Transparency was excellent but seeing was mediocre. This low in the sky, things are more impacted by the valley's light pollution---not a good time of the year to target these. Luckily poor seeing and the northerly position helped compensate for the western rotation this time of year.
After a quick early foray to find UGC 8325 (proximity of M3 and Coma) and SN 2020jhf essentially at its center, I turned to NGC 3788 and 3786 to warm up. These make a fine, very closely interacting pair, bright, and of good size. The outer extent of 3786 was only tenuously seen. The striking thing about 3788 is the bright northern arc which sometimes appeared to have a stellar center in averted vision. (I don't see a star or stellar knot there in images, but I doubt it is a supernova, perhaps just a trick of the seeing.) I could tell it was going to be a good (although short) night when I was able to tentatively detect PGC 1969819 just SW of 3786. This background galaxy provided consistent hints in averted vision, although not strong enough to be certain. It's nominal B mag is 17.5, but if I was seeing it, then its V mag is likely around 17 based on the conditions I had. I may have also picked up PGC 1971862 trailing 3788 some distance, but it was similarly challenging.
I turned to Kiso 5639 and had it immediately. At 278x it was seen as a very faint/fuzzy lower case "i" on its side. The dot is the brighter head of the tadpole, although not quite stellar. No detail past that, seeing wouldn't support it and I was skirting high limbs at the time. I then found the nearer companion (as Steve said, WAS 27 = Mrk 746 = CGCG 186-025 = PGC 36279). The latter was not difficult, and I had the impression of an xf stellar core. I was not sure what to make of the overall shape--it wasn't elongated in a normal ellipse fashion and had some square/diamond shape to its main body.
I might have also seen the 3rd member of the group, WAS 28 = LEDA 139659. I was consistently getting a hit in what turns out to be the right area, but a problem with the color rendering of my chart in this particular region created confusion. I used 357x some for this one, but it was really beyond what the seeing was supporting. I could not maintain adequate focus on 16+ mag stars past about 278x.
I also tracked down UGC 6659 NE of the group. This is a face on spiral (based on images) and was somewhat more challenging than Kiso 5639 despite being nominally brighter in overall magnitude. It's surface brightness is noticeably poorer. It was more of an AV object, although held that way.
With the group getting low between trees, I did a brief exploration of the adjacent Abell 1336 galaxy cluster at 278x without a chart. Uranometria DSFG lists the 10th brightest member as 16th mag. There seemed to be a lot there, but I had not made a finder chart of the region, and didn't sketch it, so I don't have ID's of the ones definitely seen. (There are foreground galaxies as well that were not bright enough for Uranometria.) I could spend several hours searching for members and foreground galaxies if the patch of sky was well placed overhead instead of down in the trees. Wrong time of year for this... Nearby, about a degree and a half to the SE, Abell 1365 is of similar nature.
Anyway, lots to see in the area with sufficiently large aperture (and some preparation to locate/identify what all is there for the picking.)