Been traveling around Sinnoh catching the water Pokemon newly made available, with the super rod I recently obtained in Diamond. Decided to hunt Febas since I was in the right area, so switched out my low-level attack Poke for my L. 37 Drifloon, who has De-fog (the rest of my party: L. 63 Bibarel, L. 70 Murkrow, L. 68 Machoke, L. 68 Pacharisu, L. 53 Blissey). I used the strategy suggested on this site (but checked the tiles to the side of me, too, instead of just the ones in front), and found one of the correct tiles on my fourth "step" in the water. Imagine my dismay when I hauled in a L. 15 Febas and had no Pokemon weak enough to capture it! Instead of lowering its HP, I used De-fog to lower its evasiveness, had Blissey put it to sleep, and caught the danged thing with a plain ole Poke ball on the first try -- and it with a full green HP! (I'd been catching creatures with high-yellow HP with good success by lowering their defense with Tail Whip, but didn't expect this to work.) This worked so well I never went back to retrieve my low-level attacker, and continued to hunt newly available Pokemon. The only one I've had trouble with using this strategy (so far) was a Swellow who kept using Double-Team -- quite an impressive show of wing-fluttering, might I add lol.
Note: I didn't use any repels ($$$!) and used an old rod to locate the correct tile, then switched out to a super rod for the capture after I made the first Febas faint. (The old rod only catches Magikarp and Febas, eliminating attacks by Gyarados with their irritating Intimidate.)
Still verifying my Point-man Type-Vulnerability hunting strategy with excellent success. Stopped in Pastoria's Great Marsh for a Carvanah (caught it) and decided to hunt the previously unseen poison-types there so as not to waste the trip. With my Bibarel in the lead, I didn't scare up anything but Bibarels and Starlys. I switched out to my Machoke (who's vulnerable to poison), and immediately was attacked by three different poison types in a row. Since I hunt for specific creatures, this strategy really cuts down the time I spend in the field looking for Pokemon who rarely appear. (From experience I've deduced that Pokemon in the field can know what item your point-man carries, know which type they're battling against and switch strategies accordingly, and can discern your lead Pokemon's type, avoiding a confrontation they might not win.)
All in all, an excellent day hunting -- 15 new recruits captured yesterday, including the elusive Febas! :-]