Extreme FOC arrows are not hard to tune, no matter what they are made of. In fact, one of the reasons to make an EFOC arrow is to make it easier to tune.
The trick is to get a shaft that is stiff enough to support the heavy point, while being light enough not to require too much weight up front to get the EFOC effect.
The nice thing about carbons is that you can get arrows down in the 7 or 8 grain per inch range. Which makes it easier to achieve EFOC. Aluminum arrows may be more in the 10 grain per inch range, which makes it harder to get enough weight up front to achieve EFOC.
The most important factor to achieve maximum penetration is total arrow weight. Moving the weight to the front gives you a more efficient, flatter shooting, and still better penetrating arrow.
If you are free to do whatever you want, then the thing to do is go with the lightest stiffest arrow you can get. This means carbon.
If you are constrained to use aluminum, then the most important thing is to achieve good arrow flight while getting as heavy an arrow as you can with the most FOC you can get. But be resigned to the fact that you probably won’t get a lot of FOC with aluminum, unless you are willing to shoot a 1000 grain arrow. A really heavy arrow is probably impractical with a 45# bow.
A good broadhead is also important. Ashby’s studies have shown that a two blade single bevel broadhead gives the best overall performance. For sheep and goats, it probably doesn’t matter. but pigs are tough, so using the best broadhead on them is important.
