I have an over 20 year old 14 foot Lund WC-14 that I use as a portage boat in Ontario. It has been drug over boulders countless times and looks like it. And yet I can tie that boat to my dock and leave it over night and when I come out the next morning there is not a drop of water inside it. So my vote would be to get a Lund. Here's one in Texas that looks in good condition and meets your price point.
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