I don't know your operating requirements, but are you certain a Sib is the best way to go? With a 30hp I guess you're using a trailer, in which case a rotomolded hdpe boat may be worth considering. Heavier (for the same length) and more expensive initially but... Virtually bomb proof, so no problems in shallow Snaggy flood water, roomier (so a shorter boat may do the same job) and maintenance free, so less hassle for your volunteers. Last almost forever, so cheaper long term! Several available such as whaly, funyak, rigiflex, Mac boats etc... Used examples very rare, which may indicate user satisfaction? Just my thoughts...
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