I have used both the very same 3-pt plow that Jeff recommends Ford 101 2x12 (still use it), and a 2x14, IH trailer plow, that another gentleman mentioned. Each has it's advantages, but the 3-pt plow is usually best. Two advantages of the IH, trailer plow, are its trip protection, and, that it is always set, perfectly adjusted, to plow real good in most conditions. With a 3-pt plow, you usually will not have that "trip-protection", so buried rocks could be an issue. In my own, rockless ground, that aint a problem. Also, you will need to properly adjust the 3-point plow, every time you use it, to get good plowing results. That takes a little practice, but you can find out how to adjust a 3-point plow in many old posts on this site. It all centers on getting the plow level, while one side of the tractor is lowered the depth of the furrow.
The 3-point plow has the advantage of letting you easily make adjustments "on-the fly". To get best field plowing results, different plow settings should be used for the initial, and last furrows, and that is tough or impossible with a trailer plow. Big advantages of the 3-point plow is its portability, and ease of fit into smaller plots. Another big one, as Art mentioned, is the traction multiplier obtained, on the rear axle, by the 3-point plow. I recall a story of the inventor (Harry Ferguson), plowing circles around a bunch of much bigger tractors with trailer plows because it rained, making the field muddy, on the day of the demonstration.
One thing you want to consider, especially if you are a "weekend-warrior", is to err on the small side with the plow, and all your implements. That way, you stand a better chance getting the job done, and not getting stuck with your smaller tractor, on the weekend if conditions are muddy. I have the same size tractor, and while it could easily handle a 3x14 plow in good soil conditions, there is no way I would get one, even though I live on my hunting property. I can literally pull my little 2X12 through standing water in a driving rain storm. It is kind of cool to watch the wakes roll off of the moldbords while I keep plowing through mud-holes. With this combination, I can always get my plots in on-time, rather than the big delays, waiting for the fields to get completely dry, as usually happened back in the days when I used a 2 wheel drive tractor and a trailer plow.
The 3-point plow has the advantage of letting you easily make adjustments "on-the fly". To get best field plowing results, different plow settings should be used for the initial, and last furrows, and that is tough or impossible with a trailer plow. Big advantages of the 3-point plow is its portability, and ease of fit into smaller plots. Another big one, as Art mentioned, is the traction multiplier obtained, on the rear axle, by the 3-point plow. I recall a story of the inventor (Harry Ferguson), plowing circles around a bunch of much bigger tractors with trailer plows because it rained, making the field muddy, on the day of the demonstration.
One thing you want to consider, especially if you are a "weekend-warrior", is to err on the small side with the plow, and all your implements. That way, you stand a better chance getting the job done, and not getting stuck with your smaller tractor, on the weekend if conditions are muddy. I have the same size tractor, and while it could easily handle a 3x14 plow in good soil conditions, there is no way I would get one, even though I live on my hunting property. I can literally pull my little 2X12 through standing water in a driving rain storm. It is kind of cool to watch the wakes roll off of the moldbords while I keep plowing through mud-holes. With this combination, I can always get my plots in on-time, rather than the big delays, waiting for the fields to get completely dry, as usually happened back in the days when I used a 2 wheel drive tractor and a trailer plow.
