Yes, it can. Probably cruise at 22-24, and top out around 32. Many were originally rigged w 85hp motors. Properly propped it will stay on plane down to 15 mpg or so w/o trim tabs.
One of the guys here was running a Seafari with 70. Another, "bitsamonkey," just posted some awesome numbers with a Suzuki 90. I think he was getting 6.7 mpg at 27 mph, and topping out mid 30s or so.
Fr Franks old Seafari was running an Optimax 90 with great economy and around topped mid 30s also. Its 100 lbs more than the model you speak of.
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