I did the online thing then went down to Rack Attack to see the options in person.
I have Thule on my car, with Malone Canoe kit attached. My car has roof mounts and I remove the whole shebang at the end of the season.
Bruce, we ruled out some vehicle choices, and bought others, based solely on roof rack-ability. We bought the last model year minivan before Chrysler did away with rain gutters, mostly so we could reuse our Quick & Easys. And when that POS died we bought a full sized Ford van with rain gutters, and repurposed the Q&E towers with new 2x4 crossbars once again.
Still going strong after 30+ years and three different vehicles. I mourn the passing of rain gutters. And side vent windows, but that’s another lament.
The same (sadly discontinued) Thule Tracker II crossbar posts and towers fit on two different CR-V’s, and on my Leer truck cap. I love roof mounted pegs or bars for ease of tower and crossbar removal. The Tracker II stuff literally takes seconds to remove (another reason I like locks, and take the towers/crossbars off when unboated at a launch).
That easy roof-mount is only an option if the vehicle roof has factory roof rack mounting points, but is a rock solid system. I know, I smacked a guardrail sliding on ice with 100 lbs of boats on the racks, and nothing budged or broke.
Seeing the tower and crossbar attachment designs in person, with an eye towards “How easy on and off will this be” is an excellent suggestion. I would opt for the easiest system to remove when not in use, and that may be hard to discern just reading a manufacturer’s self-glowing-praise description of their product design. I’d like to actually
see that crap come on and off if real life if possible. If it requires an Allen wrench hex or other tool I’d keep looking.
Door clipped towers can specific about exactly where, at what door frame point, they should be installed. We have a Yakima system on an old Corolla that is very roof line fussy about that exactitude. It’s an old hooptie car, so I outlined the tower locations with enamel pen on the roof.
Same with the van, we use a four Q&E crossbar system to carry four canoes; each Q&E tower location is paint pen marked on the rain gutter, and each 2x4 crossbar is marked (1, 2, 3, 4) so there is no guessing. I yellow paint penned those tower locations the week I brought the new Ford home. And drilled holes in the beefy chrome bumper for SS eye bolts the
day I brought it home. Fugit, it’s a boat toting vehicle and I’ll have my way with it even before it has a scratch.
FWIW I paint yellow paint pen marked (wood burned the 2x4 Quick and Easys)
all of our crossbar ends, not just for the specific vehicle, but also for front/back/left/right. That little Back Right “Taco BR” or Front Left “CR-V FL” paint pen notation helps with putting the racks on, and it matters at times with both proper fit and correct accessory orientation.
Jblaser, does the Kia Optima have tow rings up front for bow painters, and something at the back for stern painters? With a short roof line and crossbar spread I’d want bow and stern tie downs attached to the vehicle fore and aft, augmenting gunwale stops and two cross bar belly lines.
Admittedly I am belt & suspenders & garters when it comes to boats tied on the rack, I’d rather see nothing so much as budge or wiggle, even in crosswinds or with semi trucks blowing past on blue highways.
Under-hood webbing loops are an easy DIY. Stern tie downs can get trickier.