Bikes and stabilizing

[Susantr]

We picked up our Mountaineer 307RKD yesterday, and stayed at a campground near the dealer last night, just in case we had problems. We drove from Des Moines to Cedar Rapids this morning and saw 1 Montana on I-80 headed west, so we waved. If that was you, HI!!

Here are two questions we have and I haven't found answers for either of them in the forum. If there are answers, please just direct me to them! Thanks!

1. There is a LOT of side-to-side movement when we're parked. I can stand in the kitchen and basically rock the 5er. I've seen posts where you should have a tri-pod, wheel chocks and stabilizer jacks (behind the wheels), but DH doesn't want to spend the extra money (we've seen what we think should be used at $50-75), unless he knows it will work. He tried a couple of bottle jacks with virtually no difference in the movoment. What are the best jacks to use in this case? We do have wheel chocks (between the wheels) and the rear stabilizers down.
2. The Mountaineer has a "built-in" bike rack, but DH says there's no way to fasten the bikes to the rack -- it's just the bumper pulls out and there's a vertical bar at the bumper close to you -- not at the 5er back wall. How do you secure bikes to this rack? Or do you have to buy a "real" bike rack, and this really isn't a bike rack?

Thanks!