Well, the mare side is great. Also with the sire you are line breeding to Precipitation. The only question might be if you get much heat with the Hoist The Flag as I have read here that he is one of those lines that can come with a temper. I wouldn't worry about it excessively if the mare has a nice mind. This would be a interesting mare to breed eventers with. PatO
This is kind of off topic, but I am thrilled to see Beau Gar in the pedigree. Only because I don't often see it and my sister's horse has him on his sire's side. I can't speak to anything positive or negative that he brings to the table, just that its there.
To Market and Double Jay are both lines that are good sporthorses that "you don't see as much anymore" so nice to preserve. As noted, the Hoist The Flags are athletic but can be pretty hot and willful.
Re: HTF - I know that Hoist The Flag's son, Salutely was a well-known rogue, but our stallion, who is by Salutely is a real gentleman. I recently talked to Bill Boniface, who stood Salutely at Bonita Farm, and he told me some awful stories. I also was lucky enough to meet his breeder at the Maryland Million this year - it was quite nice talking to him! Salute The Truth, however, is very well-behaved. I think rogue-ish behavior comes more from the handlers - stallions are often handled in a way that would make ME mean if I were them (isolated, allowed to be jerks, etc). jmho
I agree with that Erin. What is done to stallions in this world makes it hard for me to judge temperament. Their lives are so unnatural. I have also heard of "killer" stallions who were fine after turned out with mares in a natural breeding situation. Being a good stallion raiser and manager is an art that not all colts get to experience. PatO