No worries about hi-jack Jacques, classic Whalers are as big of an obsession as 'Cruisers and Casitas for me.
My 17' 1973 Montauk is patiently awaiting a full resto. It's perfectly usable as is, but the gelcoat is all cracked and grazed. It's not much to look at up close. It apparently sat out in the TX sun for ~37 years before I bought it.
We took it to FL for our honeymoon where we put about 175 miles on it. It really is a fun little boat. It's pretty much indestructible, unsinkable, and floats in 6" of water. It's easy enough to launch and recover by myself, yet large enough to take 4 adults fishing, diving, waterskiing, or just cruising. It's easy to beach on any small island along your travels. This one has an old school 1983 90HP 2 stroke Johnson, it's not real fuel efficient by todays standards, but it keeps running. This is my second Montauk. I really regretted selling the last one, so I set out to find another one.
For what it's worth, you should get a hold of your Dad's. You won't regret it.
To tie all this back to my Casita thread, I plan to tow the Whaler, behind the Casita, behind the 100. TX allows double tows. You can't back up because you have 2 pivots points, but both of them are small enough, the combined weight will be approx 5000-5500 lbs. This way I can get all my junk down to the coast.