This is my analysis of the pros and cons of the R1723 vs the F1743 (which is the Alto I own).Have you had any more range experience pulling the alto. I have a model y and considering ordering the alto r1723. Also consider the fixed f1743.
The Y will tow an Alto just fine. Any trailer is going to significantly reduce your range, the Alto somewhat less than a more boxy trailer style. The issue is the long wait time to get one if you place your order now. But they are worth it.