BW 21 ft walkaround
 

Brother and I are going to look at a boston whaler ( 1991 hull repower w 150 new in 2005).
any pros and cons on handling and seaworthiness.
Never been on one.

That's a nice hull, it's the same as the Outrage of the same vintage. 150 HP is a little on the light side for that boat, however. Most probably came with a 200 or 225 and can take up to 250, I believe.

My mistake, 200 evinrude is the re power

check the transom and fuel tank. Those would be my concerns.

I had a 20 ft outrage, the hull was a 1975, not sure of the one you are looking at has the same hull design, but the one I had was well built and was really stable drifting and trolling, you do take a pounding in a head sea.