This thread got me thinkin...
I'll bet a GM truck horn from the junkyard mounted in the cuddy behind the helm with the horn directed towards the hatch would last a while and give a decent blast. Might try it out.
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1985 Wellcraft V-20, Evinrude ETEC 150: SOLD
1979 Marine Trader 44, twin Ford Lehman 120s
2006 Panga 14, Tohatsu 20
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