Anchor trolley
 

Got a Yak Attack lever lock trolley, one thing has me concerned: the company just supplies self tapping screws and says it is strong enough to handle the pressure.

Been seeing a lot of people saying and debating about using lock nuts or rivets instead or even goop to keep the strength and prevent any hardware ripping out while keeping a water tight seal.

What would you guys recommend?

I just recently installed the anchor trolley on my outback, I thought it came with lock nuts and backing plates and everything. I did dab a little rtv silicone in the pre-drilled holes just to help with water.
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That is the HD version, I have the regular one but there is no way I could access all the drill areas to put those plates in
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There are some good videos online with creative ways to get the plates into those hard to find spots
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I'm not looking to buy the trolley and upgrade, just trying to figure out how to make this one the strongest. I just keep seeing debates between well nuts and rivets with both sides making points but not too helpful
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