Hello All,<br />I would like to introduce myself to this Forum and ask for some indulgence while I get up to speed. My name is Jack and I recently purchased a 1971 21'Glasply Hardtop with a 165HP Mercruiser I/O. I have next to no experience with boating in general. The boat will be used primarily for fishing on Kootenay Lake in British Columbia, Canada. We're just north of the Idaho/BC border. I am wondering what size of 4-stroke motor would be adequate for trolling with a boat this size and if there is any preferences among you all as far as manufacturers go. Thanks in advance for any suggestions you may have. Jack