The most members online in one day was 689, 06-02-2010.
$HREDDER, 'bout time, 08 RINKER, 1999baja, 225 LPX, 24islander, 24OL4now, 266boat, 27Islander, 283Check, 28offshore, 29 Outlaw, 290SEARAY, 2Ton, 32dom, 33webbcraft, 3600cat, 36Tango, 400SS, 4thegirls, 5knuckle, 81 Scrambler, 93mariah, A$$ET$, ABT, Adam46BT, Al Bundy, alonzo111, AMER3, armond, ASH, asi, AV8N, Average Joe, awol, AZ2LOTO, BAJA 232, Baja 252, Baja Tender, baja22, bajacraig, bajadog, bajahaha, BajaOutlaw, bajasst, bareftskier, bblythe, bean85, beef2k, bgard510, Biaggi1, bighorse, bigmanr6, Bigpat5123, bigred01, blasir, bms26, boatme, BoatnFool, boatr22, boost, botemle, bowhunter, boz251, bparsel1, Bradly, brettttka, brew_crew122, Bruce2014, Bryan B, bsloop, btaries, buck183, BullMoose, bustag, Butt Cheese, buyfire, C Roll, cabin fever, Cain8768, Caincando1, Cairobaja, cajun, Caluw1, CAP, CapnKen, Captain G, Caravelle187LS, cari&ken, CaribbeanSoul, Carnivalride, CaughtREDhanded, ChappyEight, CharlesM, chevyzq8, clydsdale77, cobalt, CobaltGuy, comanchejon, Concrete Decision, connellykyle, Cooperfly, Corndude, CPR, critterhog, crowniebr, CrownLS, crownmann225, csheldon, csljyq1688, cwzonk, cyb, DaNinja, Danlb25, danmuths51, Dante Pierangeli, dapperstu, darin, DAVE47, Daveboys, davidpizzaro, dbl trbl, deadsexyII, derekpfeiffer, DeSimulacra, dfink, DIRTY DUCK, diverdwn, djmort, DL, dlewis1340, docjimm, Dockman, dodsone, Don E, dond, DoubleBlended, DOUBLESCORPIO, Dr. B, Dredd, drewplus2, drseuss, drumcat9800, DS01, dsingleton, Dtanman, duckcommander, duddy14, Dwayne, ebwick, eeasy, eichhoma, eleganza, elray0x, Elrod62, emilsr, Enough, eriebnd, evilcody, Firedog, flyboytopeka, FlyenBrian, flyin-brian, flying33, Flynon H2O, fodshaker, FormulaToSelect, fountainboy, Franky, French Tickler 24, Frequency, frogII, frygirl, funonthelake, GCB, gclapper, gh517, GINTONIC, GlassGuy, glenn at glencove, go chiefs, gotfw, GP1200r, GregTheKeg, greygoose1, gwinvad70, hammer down, hawkfan11, hawki, Hayseed, hersh, hiho, hitechdavid, hitnbottom, hoale33, hokey pokey, HOOKEDONSONICS, hotfordboat, hp525efi, HToad, hughey, hummbusa, Hunterman, IBCAMN, iflyhi22002, infield, inknppr, inshuru, irreng, IsItFast, J.T., J00f150, Jammer864, Jay Bird, Jayhawk04, jcrubaugh, JimmyBaja, Jkgstuff, jlroeder4, jlschmitz, jmartin, jnm, joegsxr, joey, John P, JohnnyZ, JOLLEY, jonh76, jptrkng, jrjones, JSS, juanchi750, Just Doo it, just schus, K-9, k-dog, kaliman91, kat daddy, kc0hlx, kck3, King High Full Boat, kmga1, kphayes, ksfuncpl, kybaja, Lakebum43, Lakerat, lakerelax, lake_carl, later, Lawrence, let it loose, leviman, liquiddiet, LisasSlave, lithoguy, little m, lokithor44, louie, LowEtsRock, lswaterboy09, lumberjacksr, luvnlife275, mab1964, mac, MackDad, mackie louise, MAKESMEHAPPY, Mark W. Hoeman, Marty, maverick21, MAX POWER, Maxx22, mbj359, mbrott, midmo3, Mikey Likes It, milesaweigh, MissLakeTime, mkramer, mlev, MnHowardCat, momike, mpally, mploans, mrbgmac, mrnate450r, mrs.budismonky, msbmax, mstang73, MSU, Mtocrs-1, Muley, MXBAJA421, My Corona, mynewname, Nate, Nauti Clint, Nauti Nemo, nebraskabaja, never enuff, neversatisfied, NOOKY, nosmoking, notjustlookin, Ntesdall, OBNOXUS, offshoredrillin, OhmsOutlaw, Ojet, old54, OLDDIRT, Onken23, onwater247, OP50MM, orthos1, ottopedlr, Outlaw 25, ozark1, ozarkdevil, OzarkKing, paradise found, Parrot Head, PartyMedic, Pat Bates, pbo310horizon, PDQPowerquest, pearcedripples, Per Diem, Pipefighter, Playa_G at 4-Play Games, portagebob, POWERQUEST502EFI, Prestige Worldwide, proam88, ptoon, pumpkinhead, Quicknloud, Quinny, QWKRN U, RAGS, rampaage, rasttus, raye, rb83, rbcubic, realdeal211, REC SPEC, RedBaja, redbud35, regalboater1, Reggie, repeatoffender, rex4570, Ridin Dirty, Rinker Rick, Riverman, RiverRat21, rlj676, rls76, RMDye, Rock Solid, rockstar38, rocman, Ron Everson, ROOSTER, roscoe, RP MCMURPHY, rsgoldrsgolds, rtarnick, rugger, rweber81, SamG, sandstormracing, sawyer, scanner, Scarab3DMC, scarabdude, schnydo, sdw, Sea Esta, sean257, searay, searay332, senglert, Shakey, Shallow Minded, sheik47, SHIP4BRAINS, shipshape, sikirica98, SinkorSwim, SixMM, slapshot, sledhead29, sleekcraft_bmc, SLOWRIDE-388, Slumlord, smokenglide, smokin cigarettes, snapperhead, snoop, SO'M BEACH, sofieo, Somewhere In the Sun, SoonerJake, Soul Asset, sourkraut, spazzboy1313, speedchaser97, speedracer, SPEEDRACER!, spk, srv220, Stacy, Steve H, stllandscaper42, Sunday Funday, SWANNY, sweetsummer, sy goldberg, syccam, tanned fat looks better, tantipasto, TaylorStl, tbird412s, tclap, Terri, Terry Summers, TGI, th, the bear, The Shineguys, The Shocker, thumper59, tikibartoo, time2kyl, Titan912S, TK, tko232, topgun38, tort007, Tritoon, Trojanman, tstrom, Ttowner, ttownmatt, TuckerDog2, Turbostang, TW720HVY, ultrahd4me, upnorthbacon, us2onthewater, Von Bongo, walleye4383, wannadous, Warren Mullen, waterbum, waupachino, wdsm, WEBSKIIN, weekender, wet pleasure, Wet Vett, WFO, Whatever it takes, WhiskeyTangoFoxtrot, who knows, Why Knot, wiggler4490, Wild, wildcatwilly, Willymutt, wowchad, wwmkwood, xsnrg, xtension, yrkoski, yschmidt, Z272, Zack, zactaylor, zdatzkc, Zombie, zoro

The most registrations in one day was 39, 12-21-2009.
Biaggi1, davidpizzaro, dbl trbl, duddy14, funonthelake, JOLLEY, juanchi750, rls76, rugger, Willymutt

MILLER_TYME (65), Frequency (50), 737jetmech (47), wir (37), jlindner (36), Concrete Decision (34), siuturtle4 (30), Surrender_D_Booty (28), kgordy11 (20)