You may not be able to sell the jetskis themselves....but you can strip them for parts and sell those
Heh, I already had a bunch of best-in-slot parts before I really even started the expansion, thanks to Ray's special inventory and robbing The Rig. Come to think of it, I should create my own "distraction" at the Aegis Expedition docks and strip all those parked skis down for parts, too. Those that aren't too useful but not too terrible either can be traded for the good shit.
It's worth noting that there actually is no such thing as a best-in-slot part. The best engines (blue rarity) draw more power, for example, so it may behoove the player to use a more efficient green- or even white-rarity engine. Higher-capacity batteries weigh more, so it can be a valid choice to use less capacious batteries and just recharge them more often. Suspensions can be dropped altogether to save on weight, especially for melee players.
My favorite ski is the Phaser. It's a bit beefier and will certainly carry more weight at speed than the Torpedo, has Turbo unlike the Blazer (and is faster, on paper anyway), and runs well with all-medium blue-rarity parts.
So here is some experimental data for all you RNG-connoisseurs. First, the setup: Patsy vs. a turret, mainly because it was very easy to repeat. The turret doesn't move and if you take a step back, it can't retaliate either. Next, the experiment: five series of 10 shots, noted down the number of hits & misses. The displayed hit chance was 63%, as you can see from the screenshot. The results: 31 hits out of 50, so 62%. Patsy had one memorable series at the very beginning: 7 hits in a row! (But that's the way math magic works: human minds remember the unusual, but not the whole picture.)
