Aloha!
FWIW, I have been to a football game @ Hawaii (2002 vs. Alabama), and I have seen them on the road twice (2006 @ Alabama and 2016 vs. Cal @ Sydney, AUS). The Hawaii fan support is really deep, and I appreciate it very much.
I also graduated from Iowa State and went to football (Walden Era) and men's basketball games (Orr Era) regularly and a few women's basketball (pre-Fennely Era), a few baseball (saw OU the year they won the CWS) and a few hockey game (Beat those guys! Check those Fu@#$%S!).
I moved away for a quarter century (OLD!) and moved back to Iowa in 2019. Now, that I live in Des Moines, I support Des Moines sports along with Iowa State sports. I have a Drake Men's B-Ball season ticket and go to a few Drake football games a year. Went to the entire Spring Season in 2021!
I also have been to a few Menace soccer games, Wild hockey games and an I-Cubs game. When they build the new soccer stadium downtown, I will buy a season ticket for that (as I love soccer).
Hawaii has a couple of advantages that I like. The Mahalo spirit of the Islands transcends sports and is more of a cultural support of all things UH. At least, that is how I see it.
As for the baseball, ISU baseball was tough with the bad weather for much of the early season. I only went to two games in my time @ ISU. I can definitely see why UH has much better support than ISU did when we were in school.
Plus, UH doesn't have to share the state with others from a major college sports point of view.
Aloha!