2000 Yukon XL, front receiver bike rack?

[00yukonxl]

Hello, looking for comments. THinking about getting front reciever + bike rack to haul bikes in the front, travel trailer out back.. 3-4 bikes. any comments? worse gas mileage? rattles around? sticks out too far? just looking around for some experience or things I haven't thought of.

thanks.

---------- Post added at 02:11 PM ---------- Previous post was at 01:55 PM ----------

DOH.. i asked this question before and got some great answer already. I just need to stop being lazy and buy one.