Thank you for that link--however--bolting the crotch strap to the plate will mean the tank/sta or whatever will ride on that bolt making the stack greater and or making it unstable. Bolting the crotch strap through itself---as was told me by Hammerhead---prevents this condition. Instead, the Hammerhead plate has a slot on the lower edge center for looping the strap through and then bolting to itself, not the plate. If having the tank rolling on the bolt head is not a concern to you then by all means do it as in the link.
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