Hi Larry, welcome to a great place for boaters to hang out. Glad to have you aboard.
I had a Reinell and to remove the front bow back rests (bolsters?) you simply had to lift hard on them. They were mounted to screws that went into keyhole shaped holes on the back of the back rests. To install them you aligned the holes with the studs and pushed down hard on the back rest. To remove them you pushed hard on the bottom to lift them straight up then they would come free.
Hope this helps.
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"Beachcomber", 1995 Sea Ray 550 Sedan Bridge, and "Cool Change" 89 Reinell 19'er...

I just want to go boating!