a friend built one along time ago. i dont remember the size. he gave it to another buddy and we cracked one of the panels in the moving process. damn thing was very heavey and extremely alkward to move. if my memory is correct the bottom was one solid piece. the only way i see using two seperate bottom pieces would be to build in place. then i would alway be worried about a leak or worse a blowout.
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It's hard being this good
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