Garage wall storage J hangers: Talic or Suspendz ?

I need to store my kayak on the wall of the garage because I have a really old garage door system and would like to use j style wall hangers. I have searched and there is little info if these are acceptable (and don't void warranty) for long term storage of Hobies.

Are the Talic kayak tilt storage rack and Suspendz Deluxe rack wall mount good options for wall storage? Do they void the warranty and cause damage? Thanks!

https://www.austinkayak.com/products/15 ... -Rack.html

http://www.suspenzkayakstorage.com/wall ... orage_rack

I have Suspendz and the quality is top notch in terms of build and materials used. Their customer service is exceptional should you have any questions or problems.

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I had a wall mount system where we stored our Oasis, and our Revolution against our garage wall when not using the kayaks regularly (like in January). I started out with home made slings similar to what you show (nothing like that was readily available when I did mine). I never had a problem once the boats were on the cradle, but getting them up there ended up being a real challenge (I had them mounted one above the other with the upper boat about 7 ft up in the air).
I started out with a (about 6 to 1) block and tackle setup, that was a disaster waiting to happen, plus all the block and tackle lines would get all tangled up all the time (royal pain). I ended up going to harbor freight and picking up a cheap boat winch and mounted it to the wall (about $25 bucks), I had a pulley in the ceiling with the rope (I just used regular 1/4" nylon rope) thru the pulley then over to the boat winch, with a hook on the other end. I set the boat on the ground in front of the racks, then ran a sling thru the mirage drive slots and hooked to the hook (didn't have to be perfectly balanced). I then went over to the winch and with my cordless drill raised the boat up so it was close to even with the cradles (just outside of the cradles, just hanging on the rope). I then locked the winch and tipped the bow over one cradle then the stern over the other then let the winch down. I always did the upper boat first then repeated with the lower boat. Once on the cradles, I typically just left the winch hooked up (but relaxed) so it would be faster to get the boats back down. When getting the boats down once you get off the cradles and you have the boat suspended, it's pretty easy and fast to throw the scupper cart into the scupper holes at that point. Actually I would just insert the scupper cart upside down on the passenger side for storage (out of the way in the boat (like you would when kayaking)).
Of course in our case if the boats sat for any period of time, I would always have to move the inevitable stack of boxes and junk from in front of the boats before getting them down (happened pretty much every time LOL). Actually I left all the seats, PFD's, paddles and mirage drives (strapped to the hull somewhere handy via a bungy) for storage, which keeps stuff from getting lost. After trading in our Oasis in 2010 for our first TI, we also stored our TI on the same wall rack (the TI is slightly longer and slightly heavier than the Oasis was), in the off season still had no difficulty.
However after a while we no longer used our two Revos anymore so we sold them, and just have the TI now, and now just store the TI on the trailer in the off season in the garage (way easier), I remounted the boat winch onto my trailer.
I never had any difficulties with hull deformation or sagging hulls when mounted on two slings, and in Florida even in the winter inside the garage can get pretty hot. Slings like what you have pictured are definitely superior to any rigid racks that I have seen ( IMO).
Hope this helps
Bob

Revo 11/13 fine for J-racks
Outback can get a little deformed on the J-racks if there is insufficient padding. A pool noodle cut in two should be sufficient padding.

I have the revolution 13. I want to avoid the use of pulleys and only want to mount the racks about 4 feet high so loading/unloading won't be an issue. I called two dealers and they said it will be ok. One said to keep an eye on the strap contact areas during the summers high temps. I'm in northern california and we only break 100 degrees a couple days a year so storing those days on the floor with wood supports is doable if needed. Thanks!