CHUMMMMDINGERRRRRRRRR is pretty fun to use here with how you can make good use of the speed retention while doing an Hydro Jump if you do it while at a high enough speed [more so if you can chain small jumps so that you can save on Boost while keeping a steady pace on straights] combining it with its breakneck steering. It took me like seven or eight attempts to get this run but I'm happy to have cracked my older PB by around two seconds AND getting the first place :]
oh well, I later stumbled upon a run of Thunder Park that is a 1:42 with Tidal Blade [medium boat] instead of a Hard/Bonus boat...so I guess that means there's room for improvement...although I don't know if boats have more or less total boost depending of what you pick.
Have you wanted to have seperate competition for each boat in every track? Thanks to the work of JBFCrasher, this is now a reality with the Single Track Extended Leaderboards! Due to the way SRC works, it is not very practical to implement seperate competition for each of the 13 boats on every track