End of month. End of year. Harley sets quotas, more sales = more bikes and better deals. More monthly/yearly deals for the salesman the better his Christmas paycheck/bonus. Winter sales are slow, rent is the same. Salesmen get hungry too. He gets a commission but only if he sells. Excess inventory. Follow up calls show interest by the salesman, net more sales, and take the customer off the market so you don't buy somewhere else. More sales = more service, upgrade parts, more referrals. ETC ETC ETC. I used to own a small retail business selling big ticket items.
Probably your best time to buy. Go for it! They are going to play the old "sense of urgency" card with you. Tell them how hard it is to buy a new motorcycle at Christmas time. You won't get this same attention when Spring rolls around! Make them throw in an extended warranty and "you'd consider it" if you think the $11K is decent. Especially since "it will be burning up warranty sitting in your garage until the weather turns better". The extended warranty probably only costs them less than 50% of it's going price. One rule that's common is "the last person that talks loses". Throw your deal out and leave it at that. Make them call you, as they have done, one last time. They will probably ask you to compromise between what you want and what they want. Any compromise on your part means extra cash for them. Just remind him that he said anything he could do he would. He probably won't "be able to do" what you ask because he'll have to take your offer to their crafty sales manager and that's where the squeeze actually comes in. Ask them how much it costs them every month to the finance company to keep that bike sitting on the floor rather than in your garage. Just remember there will be a bottom line for them as there is for you. They have to stay in business too. Be prepared to either jump on the deal or walk away.
Hope I've given you some things to think about.