I'd use a little repair patch vulcaniser or super glue on the hole. If it's all the way through then I'd also attach a small piece of patch material from the corner of a patch on the inside.
@rodabod started
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I'd use a little repair patch vulcaniser or super glue on the hole. If it's all the way through then I'd also attach a small piece of patch material from the corner of a patch on the inside.