I had a hard time doing this as well. My best advice is, take very seriously how you prep the end of the hose for pulling. A few points:
1. Cut as little of the hose away as possible while securing it around your pulling device. The less hose that's present there, the less hose is available to take the strain of being pulled through the frame. If there's too little there, it'll just snap right off rather than hold.
2. Once your pulling device is in the end of the hose, use four, five, eight zip ties between the end of the hose and further in. The more zip ties, the merrier, within limits of course. I only used two on my first couple of attempts, then I got real about it and used five.
3. It helps to warm the hose a bit before pulling. On my three failed attempts, I did nothing. On the successful attempt, I left the hose lay in the sun for a half-hour or so before prepping/pulling. It may have made no difference, or it may have made all the difference.
4. Don't conserve your Tire Wet. Between my fails and my success, I used an entire spray bottle and yes, it made a mess. But you know what? I had a mess, AND had two hoses pulled through my frame, so it is what it is.
I think point #1 above is the most important, but, a combination of everything above got me some success.
https://dfkitcar.com/forum/index.php?threads/arks-city-goblin-2008-ss-tc-donor.1301/page-11#post-26825